The Rugged Radios ones are about $100 for the handheld, but you can buy the same thing on amazon for about $35 (includes charger)
Thats what most of my wheeling circle is using on the trails these days and the CB's are more of a backup or used to fill-in those without the race radios.
I like the handheld race radios (vs. the CB) because they are more powerful and you can take it with you when walking around, or spotting.