What is the resale value for a loose copy of NBA 2K21 Mamba Forever on Xbox One?

A loose copy of NBA 2K21 Mamba Forever Edition on Xbox One is currently valued at $6.

How much more is a sealed copy worth compared to a complete-in-box version?

A sealed copy is valued at $20, which is $5 more than the $15 price for a complete-in-box version.

If I have the game in box but not sealed, what should I expect to get?

Complete-in-box copies of NBA 2K21 Mamba Forever Edition are listed with a resale value of $15.

NBA 2K21 [Mamba Forever Edition] — Xbox One Price & Value

Name: NBA 2K21 [Mamba Forever Edition] — Xbox One Price & Value
Brand: Xbox

Xbox One

What NBA 2K21 [Mamba Forever Edition] for Xbox One is worth — loose cart, complete in box, and sealed.

NBA 2K21 [Mamba Forever Edition] value — Loose $6 · Complete (CIB) $15 · Sealed (new) $20. Prices updated July 2026.

Platform · Xbox One

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Complete-in-box price history

Monthly CIB value, based on sold comps.

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Which version do you have?

For the cheapest way to own NBA 2K21, buy the Standard version at $6. The Mamba Forever Edition at $15 offers a premium experience, likely through unique packaging or limited edition status. If you are a casual collector looking for the game itself, stick with the Standard. However, if you prioritize display value or want the collectible aspect, the extra cost for the Mamba Forever Edition is worthwhile.

VersionUsedNewBuy

Mamba Forever Edition— this pageNBA 2K21 [Mamba Forever Edition] — Xbox One Price & Value$15.3$20eBay ↗

StandardNBA 2K21 — Xbox One Price & Value$5.74$8.37eBay ↗

JunkPal AI· resale insightanalyzing sold comps…

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Price data verified against · 1

PriceCharting — NBA 2K21 [Mamba Forever Edition] (Xbox One)$15.3

Game details

Brand: Xbox
Platform: Xbox One

NBA 2K21 [Mamba Forever Edition] (Xbox One) resale value

A loose copy of NBA 2K21 [Mamba Forever Edition] averages around $6. A complete-in-box (CIB) copy — game, box, and manual — runs about $15, and a factory-sealed copy commands $20.

What drives the price

Condition is everything: a clean, unscratched label, an intact box without crushing, and the original manual can swing the value 30–50%. Test that the game works before you buy or sell.

Price guide

What this actually trades for — sold values by condition vs. what sellers are asking today

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Condition	Value	Based on
Loose	$6	eBay sold comps
Complete (CIB)	$15	eBay sold comps
Sealed (new)	$20	eBay sold comps
Graded (WATA/CGC)	$100	eBay sold comps

Frequently asked questions

What is the resale value for a loose copy of NBA 2K21 Mamba Forever on Xbox One?: A loose copy of NBA 2K21 Mamba Forever Edition on Xbox One is currently valued at $6.
How much more is a sealed copy worth compared to a complete-in-box version?: A sealed copy is valued at $20, which is $5 more than the $15 price for a complete-in-box version.
If I have the game in box but not sealed, what should I expect to get?: Complete-in-box copies of NBA 2K21 Mamba Forever Edition are listed with a resale value of $15.