What is the going rate for a loose copy of Keystone Koppers [Homebrew]?

A loose copy of Keystone Koppers [Homebrew] on Atari 7800 is currently valued at $57.

How much is a sealed copy of this homebrew game worth?

Sealed copies of Keystone Koppers [Homebrew] are listed with a resale value of $80.

If I have the game complete-in-box, what should I expect to sell it for?

A complete-in-box version of Keystone Koppers [Homebrew] commands the highest price, valued at $238.

Keystone Koppers [Homebrew] — Atari 7800 Price & Value

Name: Keystone Koppers [Homebrew] — Atari 7800 Price & Value
Brand: Atari

Atari 7800

What Keystone Koppers [Homebrew] for Atari 7800 is worth — loose cart, complete in box, and sealed.

Keystone Koppers [Homebrew] value — Loose $57 · Complete (CIB) $238 · Sealed (new) $80. Prices updated July 2026.

Platform · Atari 7800Publisher · AtariAgeGenre · Platformer

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Complete-in-box price history

Monthly CIB value, based on sold comps.

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PriceCharting — Keystone Koppers [Homebrew] (Atari 7800)$237.5

Game details

Brand: Atari
Platform: Atari 7800
Publisher: AtariAge
Genre: Platformer

Keystone Koppers [Homebrew] (Atari 7800) resale value

A loose copy of Keystone Koppers [Homebrew] averages around $57. A complete-in-box (CIB) copy — game, box, and manual — runs about $238, and a factory-sealed copy commands $80.

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	$57	eBay sold comps
Complete (CIB)	$238	eBay sold comps
Sealed (new)	$80	eBay sold comps
Graded (WATA/CGC)	$87	eBay sold comps

Frequently asked questions

What is the going rate for a loose copy of Keystone Koppers [Homebrew]?: A loose copy of Keystone Koppers [Homebrew] on Atari 7800 is currently valued at $57.
How much is a sealed copy of this homebrew game worth?: Sealed copies of Keystone Koppers [Homebrew] are listed with a resale value of $80.
If I have the game complete-in-box, what should I expect to sell it for?: A complete-in-box version of Keystone Koppers [Homebrew] commands the highest price, valued at $238.