I've done a bit of research on them - but never bought my own set.....
I've heard that Radio Shack makes decent radios much cheaper than motorola.
A piece of advice - make sure you get one that has at least 14 channels, and then 38 privacy channels. That will greatly reduce the risk of getting other people on your frequency.
This is as cheap as I'd go...
http://www.dickssportinggoods.com/pr...entPage=search
Motorola does a nice job of comparing models here:
http://commerce.motorola.com/consume...2way_comp.html
Hope that helps!