The 2012 U.S. Mint proof set is less expensive than other proof sets, generally valued at around $30 to $40. However, certain individual coins included in the set may be more valuable than others, depending on their rarity, condition, and collector demand.
That being said, the 2012 U.S. Mint proof set does have some notable coins that could contribute to its value. The set includes 14 coins in total: a Kennedy half dollar, a Native American dollar, five America the Beautiful quarters, a Roosevelt dime, a Jefferson nickel, and five Lincoln cents.