Buyer beware - eBay
I'm sending a shout out for those newer at the game... Buyer beware on eBay.
I just bought a coin not listed as cleaned and it was obviously cleaned. So obvious I saw it with my naked eye. So unfortunate because otherwise it was a great looking coin.
Fortunately he had a return policy so I used it and left a neutral feedback that the coin was cleaned and I was returning it. The owner got really testy with me and asked why the 'bad' feedback and he tried to tell me that his coins are listed as may be cleaned, however this listing did not. If he had simply apologized because he didn't think it was or similar I would have altered my feedback.
So in short, always make sure you have a return ability when buying on eBay, unless you are willing to throw the money away. Be ready to at least lose the shipping costs tho. Even the good high Def pictures can hide cleaning marks. And if you leave anything but positive be ready to be blasted.
Good luck out there, it's the wild west.