Considering the number of mags, and if it truly does just have 50 rounds through it, somewhere in the $725 range is probably fair top-dollar considering that it's a CA gun. The way I came up with that number is to add up the various cost items: $575 average price new, shipped + $100 SSE (the original buyer had to pay that) + $50 for 2 extra mags. Some minuses are that it's not NIB and that's always a wildcard, some pluses that cancel out the minuses are that it can be bought here in CA. Some might pay a bit more if they like the paddle mag release, and like the fact that more P99 mags are available for it. Some might not like the paddle mag release.