I needed a new SuperDrive and a RAM upgrade ... fast ! , and I was just passing through Calgary on a long weekend on top of that, I e-mailed MacMechanic to see if I could get it done in a very short time, and it was arranged and done without a problem, and it didn't cost an arm and a leg !! ... I'd recommend MacMechanic to anyone who may have issues with their Mac, my MacBook is fully operational again .. thanks a lot !!