I came across 3 P250 complete guns and an exchange kit and extra magazinesfor a total of $800 a while back. I like Sigs, but the online reviews steered me away. All 3 of the guns have a somewhat different trigger pull, but if you are ok with double action revolvers, you'll like them. Revolver girl likes them as well and if I installed the short reach trigger in one, it wouldn't be mine any more.
She bought me a .45 compact exchange kit for my birthday and I found used magazines at CDNN for $20. The ones I got were all in great shape.
I tended to shoot them low at first, but getting used to the trigger has improved that.
I'm carrying a Caracal c right now, but would have any problem with carrying the P250s in the appropriate size,