the problem here i think is the term of "condition", i think no one can descript the condition on the goods, like 99%, m.. what is the mean of 99% here? difference person have difference POV. for seller i subject you take some more pictures of the phone you are selling it.

for buyer, you can always ask for picture of the goods first, then you start to bid. and you won't have to open this port now.

just a personaly comments.