A foil version of "Thwip!" appears in Magic: The Gathering's Marvel Spider-Man set as card #20 with Unknown rarity. The listing is primarily of interest to collectors tracking Marvel crossover releases and foil treatment variations within the limited set. At a current market value of $0.05, it sits at the low end of secondary-market pricing, reflecting limited demand or high supply. Sales and grade data, when available, can clarify condition-driven price differences.