When you setup your seller profile you will see your payment options. If the seller made you an offer through Audiogon and you accept the offer (within the valid window) then the rest goes through Audiogon. If the buyer sent you an offer you missed, the offer expired, and then you contacted him via email to accept the offer, the best thing to do is have your buyer resend the offer, you accept, then let him pay through Agon/PayPal.
