Getting paid for merchandise is the same problem for the seller. The buyer can send junk back and get his money back with just a tracking number and an "item not as described complaint".
Look at feed back and require an address and phone number that works. I always give my info before I accept payment.
I will not send high dollar parts unless it is paid as gift, I lost to many parts to scum bag buyers that use the "item not as described". So if you are not in a weekend driving distance you better be well known or get someone who is well known to buy it for you .
Some buyers I hesitate selling to or buy from until I check their profile.
