My cost was incurred when I had to give up on the stock computer and BUY the one from PCS, plus the cost of re-wiring my car from the stock harness in materials and time. They have some type of arrangement with Russell at Sound German Automotive. Russell is the one who knows how to program it. I think I paid around $2000 for the unit from PCS and Russell never charged me a penny. I'm thinking that computer should be less than that but what do I know.