Desworthy Editorial Team
Desworthy editorial reviewer focused on ergonomic chair research, desk tech, affiliate disclosure, and practical UK home office buying decisions.
Last reviewed on by Desworthy Editorial Team.
Last Verified Date: 6 October 2026. Sources and model-specific claims checked; individual fit and final basket totals depend on your circumstances.
AI Summary
- There is no defensible single resale figure without completed sales for the same UK version and condition.
- Use sold prices, not asking prices or the manufacturer’s crossed-out list price.
- Check what proof of purchase and any remaining warranty mean for the second buyer before advertising them. Source 2
Decision table
| Situation | Practical choice |
|---|---|
| Comparable sale | Same version, UK location, condition and recent completed transaction. |
| Misleading comparison | Different currency or version, or an unsold listing. |
What to do
For your own chair, calculate recovered value as the amount received after platform, packaging and delivery costs divided by what you actually paid. Record condition with clear seat-mesh, armrest, cylinder and frame photographs. Sihoo’s UK warranty requires evidence of purchase and covers manufacturing defects under conditions; it does not establish that a private buyer automatically inherits the original purchaser’s rights. Source 2
A resale worksheet that avoids inflated asking prices
| Field | What to record | Exclude from comparisons |
|---|---|---|
| Product identity | Exact M57 version, colour and age | Other Sihoo models |
| Condition | Mesh, cylinder, arms, castors and missing parts | Unspecified condition |
| Market evidence | Recent completed sales in the same UK area | Unsold asking prices |
| Seller proceeds | Sale price minus selling/delivery costs | Gross price treated as net cash |
Illustrative arithmetic: if a chair originally cost £200, sells for £90 and costs £15 to sell and deliver, proceeds are £75 and recovery is 75 ÷ 200 × 100 = 37.5%. These are example inputs, not observed M57 market prices. Use your receipt and actual costs to replace them.
Separate the buyer's total from the seller's proceeds: a buyer collecting locally may face no delivery charge, while your net calculation can still include platform fees. Do not compare your receipt with a crossed-out retail reference that you never paid. Describe gradual mesh looseness or a sinking cylinder before the buyer travels. The UK warranty policy requests purchase evidence; get written confirmation before advertising that cover transfers to a new private owner.
Frequently asked questions
Is there an official two-year residual-value percentage?
No such figure was verified.
Does a £100 asking price make the chair worth £100?
No. Look for completed, comparable sales.
Can the remaining warranty be transferred?
Ask Sihoo for a written answer for that sale. Source 2
Should mesh looseness be mentioned?
Yes. Describe and photograph any relevant wear or fault. Source 2
Sources and citation notes
Specifications and policies are attributed to their original publishers. Named hands-on reviews are attributed to the reviewer and the version reviewed. The decision advice is editorial synthesis, not a clinical, laboratory or transaction result. Check the exact version and current terms before buying.
- [1] SIHOO UK M57 specification
- [2] SIHOO UK refund, return and warranty policy
- [3] SIHOO UK after-sales and return policy
Related UK buying guides
Note: This article is for reference only.