Mass Effect 2 is an awesome game that you should buy immediately. In addition, it also offers solid electronics buying advice in the form of an alien shopkeeper.
Your character, Commander Shepard, asks the shopkeeper why he’s there if you don’t actually buy anything from him. (It’s all automated through a kiosk.) He replies:
“Customer Service. Sweeping up the store. Carefully explaining things to the technologically illiterate. It’s stunning how many people think light moves faster through expensive fiber optic cables than it does through cheap ones.”