Xelloss on 13 December 2009
Sounds iffy to me. You never know though, depends on how much hes askin. If it was like 5$, might be tempted to check it out just on a whim.....
Pins can be bent back if it is just bent pins, though it is not as easy as it sounds. But it is possible ( I have done it a few times, I know many cases of failure though)
Xelloss on 13 December 2009
ESD (electrostatic discharge) can break a CPU and have it "look" perfectly fine (it just wont work correctly).
Your best hope is that the guy is just an idiot who thinks the CPU is broken but doesnt know how to configure the board correctly to get it to POST. Really no way you are going to be able to tell though, it is very possible for the CPU to be totally shot.
Sorry cant be more help, but the fact is in this case.... there is no way really to make an educated guess... you are betting mostly on the character\competance of the seller.
Xelloss on 13 December 2009
Sounds like there is a good chance the CPU at least will be ok. Bent pins on the board is a common problem with that type of socket. Even if the board pins cannot be corrected, 30$ for a i7 920 is a heck of a deal. If you think you can get the pins straight enough, drop 25$ on the cheapest DDR3 or borrow some and give ti a whirl I say.