Originally Posted by jaymen

Conversion costs depend on the radio, and the brand of 2.4 GHz module and receiver you want to use. Corona, FrSky and Orange equipment runs under $70.00 for a module, receiver, and switch harness, plus you need 4 servos and a 4 cell NiCad if gas powered.

The labor is free if you do it yourself, but most guys charge between $100 to $200 for the conversion labor, depending again on the transmitter, as some of the earlier makes need more extensive modification.