# Keystone Koppers [Homebrew] — resale value

**Keystone Koppers [Homebrew]** is worth about **$57** loose, based on real closed eBay sales. Sealed or new examples sell for around **$79.64**.

## Value by tier

| Condition | Value (USD) |
| --- | --- |
| Loose | $57 |
| Complete (CIB) | $238 |
| Sealed (new) | $80 |
| Graded (WATA/CGC) | $87 |

Values are medians of real closed eBay sales, updated 2026-07-25. They are estimates for reference, not offers or appraisals — condition, completeness and edition move them a lot, so compare against the sold listings before pricing anything.

Recent movement: Steady.

## Check the market

- [Sold listings on eBay](https://junkpal.ai/api/go?to=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3DAtari%25207800%2520Homebrew%26LH_Sold%3D1%26LH_Complete%3D1%26mkcid%3D1%26mkrid%3D711-53200-19255-0%26siteid%3D0%26campid%3D5339166094%26toolid%3D10001%26mkevt%3D1%26customid%3Dmd-sold&p=md-sold) — the closed sales these medians are computed from
- [Live listings on eBay](https://junkpal.ai/api/go?to=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3DAtari%25207800%2520Homebrew%26mkcid%3D1%26mkrid%3D711-53200-19255-0%26siteid%3D0%26campid%3D5339166094%26toolid%3D10001%26mkevt%3D1%26customid%3Dmd-live&p=md-live) — what sellers are asking right now

eBay links are affiliate links: JunkPal may earn a commission at no cost to you.

## Details

| Field | Value |
| --- | --- |
| 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.

## FAQ

**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.

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Full price guide: https://junkpal.ai/products/keystone-koppers-homebrew-atari-7800-price
How these values are computed: https://junkpal.ai/methodology
Cite as: "JunkPal price guide value as of 2026-07-25, based on real sold listings (junkpal.ai)"