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

A loose copy of NBA 2K21 [Mamba Forever Edition] on Xbox Series X typically sells for $6.

Is the sealed version worth more than the complete-in-box version?

Yes, the sealed version is valued higher at $15 compared to the complete-in-box version's $7.

How much can I expect to get for my game if it's in the box but not sealed?

If your copy is complete-in-box but not sealed, you can expect to sell it for around $7.

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

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

Xbox Series X

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

NBA 2K21 [Mamba Forever Edition] value — Loose $6 · Complete (CIB) $7 · Sealed (new) $15. Prices updated July 2026.

Platform · Xbox Series X

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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?

To simply own NBA 2K21, purchase the Standard version for $4. The Mamba Forever Edition at $7 offers a premium experience, likely through exclusive packaging or a specific collectible aspect. Collectors prioritizing the lowest cost should stick to the Standard. Those seeking the added value and presentation of the Mamba Forever Edition should be willing to pay the extra $3.

VersionUsedNewBuy

Mamba Forever Edition— this pageNBA 2K21 [Mamba Forever Edition] — Xbox Series X Price & Value$7.03$14.99eBay ↗

StandardNBA 2K21 — Xbox Series X Price & Value$3.99$4.47eBay ↗

JunkPal AI· resale insightanalyzing sold comps…

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Price data verified against · 1

PriceCharting — NBA 2K21 [Mamba Forever Edition] (Xbox Series X)$7.03

Game details

Brand: Xbox
Platform: Xbox Series X

NBA 2K21 [Mamba Forever Edition] (Xbox Series X) 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 $7, and a factory-sealed copy commands $15.

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)	$7	eBay sold comps
Sealed (new)	$15	eBay sold comps
Graded (WATA/CGC)	$78	eBay sold comps

Frequently asked questions

What is the typical resale value for a loose copy of NBA 2K21 Mamba Forever?: A loose copy of NBA 2K21 [Mamba Forever Edition] on Xbox Series X typically sells for $6.
Is the sealed version worth more than the complete-in-box version?: Yes, the sealed version is valued higher at $15 compared to the complete-in-box version's $7.
How much can I expect to get for my game if it's in the box but not sealed?: If your copy is complete-in-box but not sealed, you can expect to sell it for around $7.