to an extent... pms are also a good proof of transaction, but if you dont have a credit card paypal is difficult to set up, and checks take a while to clear. the best way (i find) is to put the money into their account in person, and get it on the record that it was you that did it; does that make sense?rentonc said:proof of transaction is really through paypal though isn't it. if people take cheque/cash it's up to them to make sure they don't have a problem.