I picked up a NIB P-10C two months ago for $360. If I see one of the S models I'll probably get it to compare with my M&P 9c and my HK VP9sk (both also 12 round capacity). I really like trigger in my C model, but the grip texture is a lot rougher than my Glock 19 grips, damn my girly hands!
That was one of the things that got my attention in the videos about the P-10S, they have made the grip texture less aggressive than the C model. I look forward to finding one in the wild to see for myself if I like it better or not.