I guess mine was different, we were aiming for a different set up, they pretty much needed the car. But in my case, I take something off the car so it cant be driven, I'd need to get a mate to give me a lift, or get a taxi...
My point is, you are paying for the convenience. And it would have cost my self (and I guess others more than $120 to get decent tools jack etc to be able to do that job) Sorry I just get sick people who have more mechanical knowledge, and tools telling people who really dont have that much of a clue, or no tools to do something themselfs.