Proof of Purchase for Warranty

Proof of purchase can be proved by printing out the auction won email as it has the sellers membername, email address, or a copy of their payment instructions. Add this to a printout of how you paid, eg a pdf of bank deposit, or printout of an online purchase receipt via Afterpay or Ping. All of these things will prove purchase. If you paid cash, then you'd need a receipt from the seller. Good idea though to email the seller to ask what proof of purchase they need.