[quote name='Rocko']What would I be looking at? $100? Or does it vary by make/model?[/QUOTE]
Roughly, yes. Depends on the price of the unit, the install kit, and if the place you buy it from charges an install fee. You can just buy the stereo and buy the install kit and do it yourself, it's not as hard as it seems. I did mine without prior knowledge or assistance and was successful at it.