I wonder if they will let you self install. Somehow I doubt it.
Ravelco is just a series of switches in a handy dandy losable key form- you could do almost the same thing with some cheap autoparts switches, or existing items that need to be on or off to start the van.
I installed one and love it....I can leave the keys in the van and just take the pin unit when I leave the van. Its not going to run without the unit (pin, size of a quarter). A theft will have to call a tow truck to steal the van....10,000 lbs.