KAP rig + general RC n00b Q's

I'm considering building a KAP rig but am hesitant bc the only experience with RC i have was a toysRus car i had when I was 9. I didn't want to bump this really old post

so I started a new one. Also I wanted to mention here that Chris Benton's KAP site which is linked from a few places in this ggroup, showcases a rig which is quickly becoming a design template for my build. (KAP Rig No. 4 specifically. I'm building around a powershot too so hopefully I'll be able to borrow quite a bit. Here's the page to which i'm referring Okay. I'm confident enough in my design/fabrication abilities to build the rig. But as a RC n00b, I can't justify quadrupling the budget to remote control the pant/tilt/shoot operation when a timing circuit can accomplish the shooting part for a just a few bucks.

If I understand correctly, I need a TX, RX, power supply for both, 3 servos, and the right connecting wires. (I've seen this advertised as an RC System on net.) I have not seen this for under about $120.00 though. Why then have I seen some "ready-to-fly" beginner RC planes with all that stuff (and a model) for half the money?

Basically if I can get a ball-park for the most modest RC equip. to accomplish this task, at least then I'd be able to make an informed decision whether or not to pursue project further. I'm fresh out of college so budget is key so that I can keep food in the kitchen. Thanks in advance.