A quirky Common in play appearance within Magic: The Gathering’s Unfinity set, Boing! registers as an Unknown rarity entry on some marketplaces and currently holds a market value of $0.07. Collectors tracking whimsical or set-complete Unfinity runs will find it an inexpensive filler piece; its low price reflects abundant supply and limited competitive demand. Grade or recent sales data should be checked for specific condition-based valuations.