Used Walther P99...value?
I came across a 1st gen P99 AS (closed rail) today. It's got S&W import markings, a laser-engraved Walther scroll and roll-marked P99 markings. Not sure when it was made but it's a 2002-2003 model judging by the import markings. The gun is about ~94-95% and looks decently clean. Some slight wear on the edges but nothing out of control. 10 round mags are a negative. Asking price is $550, which I think is too high. Given what I've described and assuming it comes with all original accessories (forgot to ask but it does have the box so I assume it comes with at least something), what's a good offer? Also what should I look at specifically to determine if the gun has any issues? I've tried all three trigger pulls and the decocker and all work fine. I'm torn between making an offer on this or buying an S&W M&P, and plan to buy within the week.