From a point of view of condition KBMum I couldn't agree more.
Ferdinand the Yak and I went through a spate of buying cards (FOTR cards in fact) that were ... well let's just say they didn't live up to our high expectations. And that's an understatement, I still have one I refer to as a "tea towel" it's in such poor condition.
I couldn't sell it in good faith so I don't

I just keep it on display and I don't worry about the effect of ultra violet light on it

At that point I think I voiced that Beckett grading wasn't such a bad idea

To be fair I have to say I've really appreciated opening cases of PoAU and having all my cards mint - only one wasn't mint and Artbox kindly replaced it

I think the important thing to take from this is to buy from people you know - on ebay if that's where they are selling, but just so you know what you are getting. Or don't be afraid to ask lots of question for sellers to any sellers you haven't bought from - or check their feedback to see if they dealt with any of your friends and email them to see how their deal turned out.