When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I'd suggest the Prestige City Tough 996R. Comes with a long range antenna (i've personally started my car from 2 blocks away!), LCD pager remote (will page you if alarm goes off), and will also give you confirmation if the alarm is armed or disarmed(on remote) in case you're not within ear shot of you car.
I personally have this alarm on my Z-71, and have installed these a WIDE variety of cars.
Or if you want a basic remote start the Pretige APS-785 is a good model. It doesn't have the paging system or LCD remote, but it works great and has the same distance the 996r has.
As far as shop cost, I'm not sure how much they would charge, but labor is usually the most expensive thing when buying the alarm. Locally at the shop I used to work at, a basic remote start alarm with Super heterodyne antenna runs $350 installed, and the system I have runs $550+ installed (no window roll up or window roll down). If you wanted window roll up and window roll down, that's usuallly and extra $100-$200.