Samsung Galaxy S21 Ultra 5G 128GB cellular — Used market price, United States
A used Samsung Galaxy S21 Ultra 5G 128GB cellular typically sells for $329 in United States as of 2026-09-01, based on 61 observed sales. Half of all sales fall between $270 and $473.
What a flipper should pay
Buying below $270 leaves room for fees, postage and a returns allowance when you resell near $329. 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.
Same product in other markets
| Market | Typical price | Range | sales compared |
|---|---|---|---|
| United Kingdom | £209 | £150–£261 | 51 |
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.