To use your FanCash you must have a Fanatics ONE account and be logged in. You can then redeem your FanCash on purchases while shopping on Fanatics.com, the Fanatics App, Fanatics partner sites, and Topps.com.
FanCash can also be redeemed on Fanatics Sportsbook & Casino rewards (such as Bonus Bets, Profit Boosts, and Casino Credits in casino states), Fanatics Markets trades, Fanatics Live on fixed-cost items (excl. auctions), and Fanatics Collect on any purchase including marketplace buys, live break auctions, Vault submissions, grading, and shipping requests.