I had a client price shop every item on the internet and ask me why I should payl the extra $3500 . I told him that if any thing goes wrong with any part of the system . It will be a service call which I charge 150.00 for and that if a piece went bad he would have to pay $150 to pull the piece out he would have to ship it out and then pay $150 for me to put it back in . But if i sold him the piece then I would do all of that for free . And if it was a piece like the processor were the whole house wouldn't work I would get an advance replacement.