What is the going rate for a loose copy of Spy vs. Spy?

A loose copy of Spy vs. Spy for the Sega Master System is currently valued around $20.

How much more is a sealed copy worth compared to a loose one?

A sealed copy is valued at $63, which is significantly more than the $20 price for a loose version.

What is the price for a complete-in-box version?

The complete-in-box version of Spy vs. Spy is currently selling for $31.

Spy vs. Spy — Sega Master System Price & Value

Name: Spy vs. Spy — Sega Master System Price & Value
Brand: Sega

Sega Master System

What Spy vs. Spy for Sega Master System is worth — loose cart, complete in box, and sealed.

Spy vs. Spy value — Loose $20 · Complete (CIB) $31 · Sealed (new) $63. Prices updated July 2026.

Platform · Sega Master System

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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 Spy vs. Spy, buy the Standard version for $31. The Sega Card version at $35 offers a slight premium, likely due to its specific card packaging or perceived collectible status, though the difference is minimal. If your goal is basic ownership, the Standard is the clear choice to save money. Pay the extra for the Sega Card only if you specifically prefer that particular format.

VersionUsedNewBuy

Sega CardSpy vs. Spy [Sega Card] — Sega Master System Price & Value$35$70eBay ↗

Standard— this pageSpy vs. Spy — Sega Master System Price & Value$31.49$63eBay ↗

JunkPal AI· resale insightanalyzing sold comps…

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Price data verified against · 1

PriceCharting — Spy vs. Spy (Sega Master System)$31.49

Game details

Brand: Sega
Platform: Sega Master System

Spy vs. Spy (Sega Master System) resale value

A loose copy of Spy vs. Spy averages around $20. A complete-in-box (CIB) copy — game, box, and manual — runs about $31, and a factory-sealed copy commands $63.

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	$20	eBay sold comps
Complete (CIB)	$31	eBay sold comps
Sealed (new)	$63	eBay sold comps
Graded (WATA/CGC)	$525	eBay sold comps

Frequently asked questions

What is the going rate for a loose copy of Spy vs. Spy?: A loose copy of Spy vs. Spy for the Sega Master System is currently valued around $20.
How much more is a sealed copy worth compared to a loose one?: A sealed copy is valued at $63, which is significantly more than the $20 price for a loose version.
What is the price for a complete-in-box version?: The complete-in-box version of Spy vs. Spy is currently selling for $31.