Well I would never suggest setting up a pushbutton start that would start the car without any sort of verification that the driver was authorized to drive the car (aka a key). Still working everything out with parts compatibility and whatnot, but I think it may be more in the range of $150 now for the RF fob / pushbutton start system. Price hike is because RFID doesn't have the range necessary, so a more expensive RF system must be used, which has a far greater range of 300ft if antennas are used. However I'm going to omit the antennas and somewhat muffle the signal so the range is only about 5ft. I'll post back with more information when I have it.
