Not all members have information you can verify, like loft numbers, it seems like Coxy has some sort of RPA number and look what he does
If you are not sure of the seller
Third party is the easiest option, you send the money to third party as agreed, the buyer gets the goods as described, then the third party passes on the money to the seller
I am sure the coxy's would stop operating under these conditions
Same could safeguard sellers who breed birds for people and never see them again and their money
I am sure there are established and respected members who would offer third party services