They don't have a 15" in my price range.My max is $900 right now, and the 13" Air comes out to almost one thousand.
OK, if your budget is under 1K that changes everything. you definitely need to get something significantly older. especially if you're looking at 15" models. Apple's laptops are nice but they're not really aiming at the under $1K market at all.
Or, if you don't need Apple's build quality and would prefer newer CPU and GPU, you could just get a Windows laptop.