It is not that big problem ,but if you do not want to share you personal ID card with anyone. Because someone can just make a copy of it or abuse it. I bet that they can easily find ways.
I also remeber other problems with PA . I have sold like 30 accounts there ,but there was problem that you had to change your email to owner's one once he checkout. So in time between you has sent details to PA and they reviewed it, the buyer could easily accept email change and then recover lost password and change it. Then wipe out or destroy account and you would have no chance to prove it to PA ,because once they will go to check account details you provided they will find out that password is wrong so they will ask you for new and if you would not repsond with working one then they will return money to buyer. I reported this bug few times also mailed them ,but nothing has change. I do not know how it is now ,because it was like 6 months ago.