So I want to purchase a used MBP for my kids to use at home. I am looking to spend from 400 to 600. I know it won't be the latest and greatest but I am assuming I can still get a very solid one Can you recommend or help me with models that might be in that price range? I do not not know a ton about them. Thanks. Sent from my iPhone 5 using tapatalk ---------- Forgot to ask, what should I be worried about with these older models? Battery, screen, keyboard. How can I check the battery?