SIHOO M57 is one of those budget-friendly ergonomic chairs people often look for used because it already costs less than many premium chairs. This guide covers where to buy it refurbished or secondhand, what to check, and how to avoid bad listings.

Is a Used/Refurbished SIHOO M57 Worth Buying?
A used or refurbished SIHOO M57 can be worth buying if the price is low enough and the chair is still structurally solid. The M57 is popular because it gives you a breathable mesh back, adjustable headrest, adjustable lumbar support, 3D-style armrests, recline function, and a high-back ergonomic shape without the premium price of brands like Herman Miller, Steelcase, or Humanscale. Because it is already a value-focused chair when new, the used price has to make sense.
For the SIHOO M57 specifically, the biggest reason to buy used is saving money on a chair that still has most of its original comfort features intact. The mesh back, lumbar support, headrest, armrests, and recline mechanism are the features that make the M57 worth owning. If those parts are still working properly, a used M57 can still be a practical home office chair.
However, the SIHOO M57 is not always the best chair to buy used if the discount is small. Since new M57 chairs are often sold at competitive prices online, a used one should usually be noticeably cheaper than a new listing. If a seller is only offering a small discount, you may be better off buying a new SIHOO M57, especially if it includes warranty coverage, return protection, original parts, and fresh mesh.
The best used SIHOO M57 listings are usually chairs that were lightly used in a home office, bought during a work-from-home setup, or returned/open-box because of minor packaging damage. These can be good buys because the chair may still look close to new. The risky ones are listings with sagging mesh, missing headrest hardware, broken armrests, weak gas lift, cracked base, noisy recline, or vague photos.
Before buying a used or refurbished SIHOO M57, focus on the condition of the mesh seat/back, lumbar knob/slider, headrest, armrests, gas cylinder, tilt lock, recline tension, caster wheels, and frame. These are the parts that affect whether the chair still feels like an M57 or just looks like one in photos.
If you are comparing prices, it can also help to check current new and replacement listings on Amazon SIHOO M57 listings before buying used. That gives you a better idea of whether the used price is actually a good deal.
Used vs Refurbished SIHOO M57: What Is the Difference?
A used SIHOO M57 usually means the chair is being sold as-is by a previous owner. It may have normal wear, dust, small scratches, seat mesh softness, armrest wear, or minor caster marks. The seller may not test every feature, and the chair may not include the original box, manual, or extra hardware.
A refurbished SIHOO M57 should mean the chair has been inspected, cleaned, repaired, or restored before resale. For example, a refurbished M57 may have a replaced gas cylinder, cleaned mesh, tightened screws, tested recline lock, or replaced casters. However, “refurbished” does not always mean factory-refurbished. Many marketplace sellers use the word loosely, so you should ask exactly what was refurbished.
For the SIHOO M57, the most useful refurbishing work would be replacing a weak gas lift, fixing armrest movement, checking the lumbar adjustment, tightening the back frame, replacing worn caster wheels, and making sure the recline mechanism locks properly. Cosmetic cleaning alone is not enough to justify a much higher refurbished price.
How Much Does a Used or Refurbished SIHOO M57 Cost?
The price of a used or refurbished SIHOO M57 depends heavily on condition, location, shipping cost, and whether the chair is complete. Since the M57 is not a super-expensive chair when new, used prices need to be attractive enough to make the deal worthwhile.
In general, a good used SIHOO M57 deal is usually one that saves you a meaningful amount compared with buying new. If the used chair is lightly used, fully functional, clean, and local pickup is available, it may be worth paying more. If the chair needs parts, has worn mesh, or must be shipped, the price should be much lower.
For online marketplaces, watch out for shipping fees. A used SIHOO M57 can look cheap at first, but office chairs are large and expensive to ship. A listing with a low item price and high shipping cost may end up costing almost the same as a new chair. Always compare the total checkout price, not just the listed price.
A refurbished SIHOO M57 may cost more than a used one if it has been professionally checked, cleaned, and repaired. But if the refurbished listing does not explain what was replaced or tested, treat it like a normal used chair and avoid paying a big premium.
You can also compare the used price against new SIHOO M57 ergonomic chair prices and office chair gas cylinder replacements if the used chair has height-adjustment issues.
Where to Buy a Used or Refurbished SIHOO M57 Online
eBay is usually one of the best places to check for a used, open-box, or refurbished SIHOO M57 because listings change often and you can compare different sellers, conditions, shipping costs, and return policies in one place. Search terms like “SIHOO M57,” “SIHOO M57 ergonomic chair,” “SIHOO M57 mesh chair,” and “open box SIHOO M57” can help you find more listings.
When buying a SIHOO M57 on eBay, do not only look at the main photo. Open the full listing and check whether the seller lists the condition as used, open box, refurbished, new other, or parts only. For the M57, the photos should clearly show the headrest, mesh back, lumbar support area, armrests, seat, base, wheels, and underside mechanism.
A strong eBay listing should show the actual SIHOO M57 being sold, not only a stock photo. If the listing uses only product images from SIHOO or Amazon, ask the seller for real photos before buying. You want to see the mesh condition, armrest pads, back frame, gas lift, and caster base. Also check seller ratings, return window, shipping cost, and whether the chair will be shipped assembled or disassembled.
If the SIHOO M57 is listed as refurbished on eBay, ask what was refurbished. Was the gas cylinder replaced? Were the wheels replaced? Was the recline tested? Was the lumbar support checked? A real refurbished listing should give more detail than just “tested and works.”
Other Online Websites/Marketplace for Used/Refurbished SIHOO M57
- Amazon Renewed, open-box, or warehouse-style listings: Amazon may sometimes show returned, open-box, or discounted SIHOO M57 listings depending on availability. It is worth checking used SIHOO M57 listings on Amazon, especially if you want easier returns than a private marketplace sale.
- Facebook Marketplace: This can be useful for finding a SIHOO M57 locally, especially from people who bought one for a home office and no longer need it. The advantage is that you can inspect the chair in person, sit in it, test the recline, check the gas lift, and avoid shipping costs.
- OfferUp: OfferUp can be good for local used SIHOO M57 deals. Search for “SIHOO M57,” “SIHOO chair,” and “mesh ergonomic chair” because some sellers may not write the full model name in the title.
- Craigslist: Craigslist is still worth checking for local office furniture deals. The SIHOO M57 may be listed by homeowners, small offices, or people clearing out work-from-home furniture. Always ask for real photos and test the chair before paying.
- Office furniture liquidators: Some used office furniture stores and liquidation websites may sell ergonomic mesh chairs, including SIHOO models. This is less common than eBay or Facebook Marketplace, but it can be useful if you want a chair that has been checked before resale.
Used or Refurbished SIHOO M57: Buying Tips & What to Avoid
- Check the exact model name: Make sure the listing is actually for the SIHOO M57. SIHOO sells multiple mesh chairs that can look similar in small photos, including other M-series and Doro models. Look for the M57-style high mesh back, adjustable headrest, lumbar support, and armrest design.
- Ask for real photos: Avoid listings that only show stock images. For a used SIHOO M57, you need actual photos of the chair from the front, side, back, seat, armrests, base, wheels, and underside mechanism.
- Inspect the mesh seat: The M57 uses mesh for breathability and support. If the seat mesh is sagging, stretched, torn, shiny from wear, or uneven, the chair may not feel supportive anymore.
- Inspect the mesh back: Look closely at the backrest mesh and frame. Avoid chairs with cracked back frames, pulled mesh, broken mounting points, or a backrest that leans unevenly.
- Test the lumbar support: The adjustable lumbar support is one of the main reasons to buy the SIHOO M57. Ask the seller if the lumbar adjustment works smoothly and stays in place. If it is loose, stuck, or missing, the chair loses a lot of its value.
- Check the headrest: Make sure the headrest is included and adjustable. Some used M57 chairs may be missing the headrest or the mounting hardware. A missing headrest should lower the price.
- Check the armrests: The M57 armrests should adjust and feel stable. Avoid listings where the armrest pads are cracked, sticky, loose, or uneven unless the price is very low.
- Test the gas lift: Sit in the chair and raise/lower it if buying locally. If the chair slowly sinks, the gas cylinder may need replacement. You can compare replacement costs by checking office chair gas lift cylinders.
- Check the recline and tilt lock: The SIHOO M57 should recline smoothly and lock properly. Avoid chairs that suddenly drop back, make loud grinding sounds, or do not hold a recline position.
- Look at the caster wheels: Worn or noisy wheels are not always a dealbreaker, but they should reduce the price. If needed, you can replace them with office chair caster wheels.
- Ask about pet and smoke exposure: Mesh chairs can hold odors, hair, and dust. If the SIHOO M57 came from a smoking home or heavy pet environment, cleaning the mesh may be harder.
- Check screw holes and assembly points: Since the M57 requires assembly, used chairs may have stripped screws, missing bolts, or loose connection points. Ask if the chair comes fully assembled or with all hardware included.
- Avoid “parts only” listings unless you need parts: Some listings may look cheap but are sold for parts or repair. Only buy these if you specifically need M57 parts such as armrests, wheels, base, or headrest hardware.
- Compare against the new price: Before buying used, check the current cost of a new SIHOO M57 office chair. If the used chair is close in price to new, it may not be worth the risk.
- Ask why the seller is selling it: A normal answer like moving, upgrading, or not needing a home office chair anymore is fine. Be careful if the seller avoids questions about comfort, condition, or function.
- Verify return options: On eBay or Amazon, check return policy before buying. For local marketplaces, assume there are no returns once you pay.

SIHOO M57 Ergonomic Office Chair, Mesh Back Desk Chair with 3D Armrests

SIHOO M57 Ergonomic Office Chair, Mesh Back Desk Chair with 3D Armrests

SIHOO M57 Ergonomic Office Chair, Mesh Back Desk Chair with 3D Armrests
Used vs New SIHOO M57
A used SIHOO M57 is best when the chair is clean, complete, fully working, and priced far enough below a new one. It makes sense if you can inspect it locally or buy from a marketplace with buyer protection. A lightly used M57 can still give you the breathable mesh back, adjustable lumbar support, headrest, armrests, and ergonomic shape that make the chair popular.
A new SIHOO M57 is better if the used price is too close to retail, if you want warranty coverage, or if you do not want to worry about worn mesh, missing screws, weak gas lift, or damaged armrests. Since the M57 is already a budget-friendly ergonomic chair, the new version can sometimes be the smarter choice when online discounts are available.
The simple rule is this: buy used if the savings are strong and the chair is in excellent condition. Buy new if the used listing has unclear photos, high shipping, no returns, or only a small discount.
SIHOO M57 Used/Refurbished FAQ
Is it safe to buy a used SIHOO M57 online?
Yes, it can be safe if the listing has real photos, clear condition details, seller ratings, and a return policy. For the SIHOO M57, make sure the mesh, lumbar support, headrest, armrests, gas lift, recline, and wheels are all checked before buying.
What should I check first on a used SIHOO M57?
Check the mesh seat and back first because comfort depends heavily on the mesh support. Then check the lumbar adjustment, headrest, armrests, gas lift, recline lock, caster wheels, and all screws or mounting points.
Is a refurbished SIHOO M57 better than a used one?
A refurbished SIHOO M57 can be better if the seller actually inspected, cleaned, tested, and repaired the chair. However, if the listing does not explain what was refurbished, treat it like a normal used chair and do not pay extra just for the word “refurbished.”
How much cheaper should a used SIHOO M57 be?
A used SIHOO M57 should be noticeably cheaper than a new one after shipping and taxes. If the total cost is close to the new price, buying new is usually safer because you may get better return protection, cleaner parts, and warranty coverage.
Can I replace parts on a used SIHOO M57?
Some parts may be replaceable, such as caster wheels, gas cylinder, screws, and possibly armrest-related parts depending on availability. However, model-specific parts like the back frame, lumbar support, headrest bracket, or seat mesh may be harder to find.
Should I buy a SIHOO M57 with sagging mesh?
Usually no. Sagging mesh can make the SIHOO M57 less supportive and less comfortable. Unless the chair is extremely cheap and you only need it temporarily, it is better to buy one with firm, even mesh.
Is an open-box SIHOO M57 a good deal?
An open-box SIHOO M57 can be one of the best deals if it is complete, unused or lightly used, and includes all hardware. Check whether the box was opened because of a return, shipping damage, missing parts, or simple buyer remorse.
Can I buy a used SIHOO M57 without testing it?
You can, but it is riskier. If you cannot test it, ask for close-up photos and a short video showing the height adjustment, recline, armrests, headrest, lumbar support, and wheels. Use marketplaces with buyer protection when possible.
Where is the best place to buy a used SIHOO M57?
eBay is one of the best online places because you can compare listings, seller ratings, shipping, and return policies. Facebook Marketplace, OfferUp, Craigslist, and Amazon open-box-style listings are also worth checking for used or discounted SIHOO M57 chairs.
What SIHOO M57 listings should I avoid?
Avoid listings with only stock photos, unclear model names, missing headrest, torn mesh, sinking gas lift, broken armrests, cracked base, no return policy, very high shipping, or vague descriptions like “works fine” without detailed photos.
Buying a used or refurbished SIHOO M57 can be a smart way to save money, but only when the chair is complete, clean, and fully working. Compare it with the new price, check the mesh and adjustments carefully, and avoid listings with vague photos or small discounts.

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