I'm also upset that it took me so long to find USPSA. I've been shooting 2-3 local matches a month to help make up for it.
Since I'm a cheap ass and the most competition is in Limited I bought an M&P 40 Pro. Put in an Apex trigger kit, SSS magwell, and Taran Tactical basepads and I actually like it. It's my first striker fired gun. I was a big DA/SA and SAO guy before.
With 5 mags with basepads (2 came with the gun), gun with parts, and a belt/holster/mag pouches I'm at $1200 or so. Maybe a bit more. Not bad to get into the sport with decent gear and able to be competitive locally.
ETA: Anyone who is nervous about trying it shouldn't be. It won't take long to figure out who will be more than happy to help you with everything. Most guys will. I can only think of a few guys I see that won't. Probably 20-25 that will. Show up with a gun, belt, holster, and mags and tell the RO it's your first match. It won't be your last.