You can get them new for about $350 depending on which slide you want. As far as the grip goes, unless the only pistols you've shot are single stack 1911's, it's not all that abnormal. I mean unless you have the the hands of a 8 year old, you should be fine. Another member on here has the Taurus 24/7 Compact which is effectively the same gun (side by side, you can hardly tell them apart) with a few additional features that you may or may not want. The decocker on the 24/7 is nice but the "textured" grip is just stupid. Taurus makes mag spacers for the 9mm and .40 to fill the gap when using the mags from the full size 24/7 in the compact 24/7 and PT145 but for whatever reason doesn't make them for the .45. I'm working on trying to get some made for mine.
Do NOT buy a used one as the original model (4+ years ago) had issues with shearing the hammer pin. But I've had this PT145 for about 6 months, my mom has had a PT111 (the 9mm version) for about a year and I've got two friends who have both had theirs for a couple of years.