Maybe this is foolish, but I always use gunbroker sorted by price to get an idea of what the range of available prices is, and use that to determine what is a deal currently. That model right now looks to be $400 and counting in auction for the absolute low end, msrp is $720, and new prices are $470 to a more common $600. That's a green light to me for your offer. Can't discount the value of being in hand and no sales tax being from a relative. Not that I wouldn't try to haggle it down to $300 or $350 with ammo and gadgets included....