Samsung Galaxy S21 5G Grey 128GB cellular — Used market price, United Kingdom
A used Samsung Galaxy S21 5G Grey 128GB cellular typically sells for £154 in United Kingdom as of 2026-08-05, based on 92 observed sales. Half of all sales fall between £126 and £175.
What a flipper should pay
Buying below £126 leaves room for fees, postage and a returns allowance when you resell near £154. At or above the typical price there is no flip in it.
Underpriced listings right now
Live listings priced below the typical used price. FlipGap estimates the gap to market; verify condition and seller before you buy.
Recently gone listings
Classified-ad listings we tracked that disappeared, most likely sold at or near the asking price.
| Listing | Market | Typical price | gone after |
|---|---|---|---|
| Samsung Galaxy S21 FE 5G - White, 128GB, As New HAS SCREEN BURN | Gumtree UK | £80 | 538h |
| Samsung Galaxy S21 5G 128GB | Gumtree UK | £110 | 113h |
| Samsung Galaxy S21 5G FE 128GB (Boxed) | Gumtree UK | £120 | 113h |
How this price is computed
The band comes from live eBay comparables and FlipGap's own cross-marketplace listing corpus, trimmed to the interquartile range so bundles, parts-only and sealed-new listings do not distort it. "Typical" is the median of that trimmed set. Bands refresh whenever the product is priced again and pages are only published when the sample is large and consistent enough.