Good eyesight, a decent light, a couple of razer blades and sometimes a propelling pencil can do the job.
I had an Intel Core2 or Duel Core cpu that arrived with half a dozen bent pins years ago, it took some time and patience but I was able to get the pins straight. The razor slips between rows of pins (allowing you to get the bent one lined up as you straighten it) and the propelling pencil without lead in it can in some cases fit over the pin to help, but it is fiddly and the pins can/do break at times so you have a limited number of attempts to get it done right.
I think there used to be a guide on doing it in either GH or the CPU section, but there will almost certainly be a video on youtube as it was an annoyingly common issue for intel CPU's especially. In some ways the packaging for OEM chips was better than that for retail, as OEM chips are IIRC shipped in trays or 20 or so with the chips pushed into stiff anti static foam, then the likes of OCUK used to pop them in little plastic boxes with the same foam so the pins could not bend (unlike the retail intel packaging where the chip was dropped to rattle a bit in a plastic clamshell and the weight of the cpu was enough in some instances to bend some pins during transit).
As Curioustomcat says no one can predict if it'll work or not, or even if say cex will bother checking it closely. I will note that a very slightly bent pin doesn't necessarily become an issue, a lot of zero insertion force sockets can/do straighten slightly offset/bent pins out as they clamp, as long as the pins are straight enough to fit into the socket to begin with.