I can tell you that when I was looking all over for a used Remington 700 short action, I determined that unless I got lucky at a pawn shop or a garage sale I might as well save myself some risk and hassle and buy a new one. Used prices were VERY close to new ones, close enough that the FFL fee to have one shipped made it a break-even proposition.

You may chop $100 off what it cost new, but that's about it.