Palmetto has a good deal on the Shield .45 thru tomorrow, $369 with free shipping, I think that's a pretty good price because the cheapest other one I could find on Gunbroker was $368 with $35 for shipping. Only "catch" is this is the thumb safety model, which I don't like, but that can be easily removed or disabled from what I understand.
http://palmettostatearmory.com/s-w-m-p-45-shield-pistol-180022-with-thumb-safety.html
http://palmettostatearmory.com/s-w-m-p-45-shield-pistol-180022-with-thumb-safety.html
