Craig:
I'm assuming you don't think that a Pronto is "fairly cheap" and you are looking for another type of remote control :)
The cheapest and most effective is an RF remote control and RF transceiver. This type of remote does not require line of sight control and has a very good range.
If you look on our web site at:
[Link: ourworld.compuserve.com] you will see a list of clearance items. You can pick up an RF remote and Transceiver for $21.
Robert
RCI Automation