The thing is though going by paypals email it is the buyer who initiated the unautherised use on thier own credit card. If the card was stolen or something wouldn't the cardholder be making a claim and not the buyer.

I have successfully won a case before without proof of postage, it just cost more than the item was worth.

The buyer registered the same day as purchasing from me and they also filed chargebacks against 2 other sellers as well.

I don't have proof of postage so is it possible to just resend the item with tracking and postage proof and supply that info to paypal?