1. Seller sends smaller license that needs an upgrade. (Toy Museum -> Toy Suite)
2. Buyer raises a Paypal conflict and requests part refund.
3. Seller promisses full refund when license gets sent back.
4. Buyer sends licenses back.
5. Paypal refunds part refund when closing conflict.
6. Seller refuses full refund.
7. Paypal conflicts can only be used once
=> Money is gone.