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Our algorithm tracks thousands of verified sales from eBay and other marketplaces. We don't use asking prices, only what buyers actually pay.
We automatically exclude damaged items, reproductions, and extreme outliers to ensure the average is representative of the true market value.
The retro market moves fast. Our database refreshes every day to capture the latest trends and shifts in collector demand.
Confidence Score: High • Based on thousands of verified transactions
Currently, the value of a Complete In Box (CIB) copy of Happ Competition Pro is estimated around $77.00. For collectors looking for a Loose copy, transactions usually happen around $22.00. The price gap suggests that the box and manual are particularly sought after and hard to find.
Released on NES, this title is an interesting piece for any NES collector. The game's value remains stable, making it a safe bet for your collection.
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Our algorithm tracks thousands of verified sales from eBay and other marketplaces. We don't use asking prices, only what buyers actually pay.
We automatically exclude damaged items, reproductions, and extreme outliers to ensure the average is representative of the true market value.
The retro market moves fast. Our database refreshes every day to capture the latest trends and shifts in collector demand.
Confidence Score: High • Based on thousands of verified transactions