New Macs can be pricey, so it's often a good idea to look towards a nice refurbished unit instead. However, regardless of their condition, there are some Mac models that are best left on the shelf, unless you have a very specific use for them.

Your AppleCare has run out, or you never bought the extended AppleCare+ plan, and now something has gone wrong with your MacBook. You take it to the geniuses at the store, and are given a huge quote to repair your system. Why?