Me and Simon (Zippy) both bought a pair of Kashi's from someone on bmxmuseum we didn't know. Did it regular payment and thank frig we did. That was november 5th they were paid for, neither of us got anything and both got a claim in for a refund 6 weeks later. Worth paying the fee's if you're going in blind on a purchase. They claimed they were sent, tracking numbers didn't work and 10 weeks later still nothing for both of us. Funny that.....Unless you got yours Si? Not asked you for a few weeks....
To answer your question you don't do it through the personal payment tab you do it through purchases.