We live in a buy be aware world and the on-line world just accentuates that. Put another way, it is up to you to ferret out the information that is important to you.
With that in mind, I published
Buying and Selling On Ebay several years ago. The primary focus is on the buyer and his, or her, ability to get information before bidding/buying.
As for a definitive list of condition - what good would it do? Would it really change the situation? I doubt it, but I could be wrong.