I purchased a GA-7PESH1 from this seller last month. It was listed as "Used", but the board looks fairly new. Packaging was fine, the MB was in its anti-static bag, which was then wrapped with pink bubble wrap inside a non-original box (as expected for used items). All CPU sockets have their protectors on them, so good there! For a "used" board, it was in great condition. Everything has tested functional with 1 CPU so far.
The only things were:
1. Due to the bubble wrap, the VGA and serial ports were slight bent inwards. That didn't cause any damage and I was able to straighten it back out. Part of the cause may just be the fact that in this MB model, there is no support bracket behind those "thin" ports. Looking at pictures for the GA-7PESH2, it seems to have a bracket that should prevent that.
2. I hesitate to mention this, but I did notice that one of the pins on the second CPU socket reflected light slightly differently (definitely not a very scientific observation though). I don't have a 2nd CPU to test it out yet, but it does NOT look damaged to me and it's probably within tolerances. I'll report back if I am wrong about this...
I have no RMA experiences to speak of for this seller...
Hope this helps!