Courtyard.io is the leading RWA project on Polygon, letting users buy and sell graded trading cards onchain with the ease of web2 UX. The Vending Machine frame brings the Courtyard.io experience to Farcaster, letting users pay with the funds they already have in their connected wallets to buy a real physical graded card. The entire experience from paying through revealing which card you got was built in frame so users don't have to leave their client unless they want to redeem the card for the physical.