I would guess that there are those out there that would do exactly what you are saying. In my case, most of what I have bought has been a flight pack for JR with the standard servos for around $150. If you add up all the separate parts servos, receiver, etc, it would be much more, and if I buy a 4 channel radio, my opportunity to sell it is somewhat limited. The club I fly in has very few pilots that are still using 4 channels. Most of them have started with the 6 channel computer radios, because in the long run they are going to need them. You can't really pick up radios like that for the cost I have cited.