Honestly? Depends what you're looking for. There are plenty of very affordable budget model basic laptops available. Without looking up specifics at the moment, I suspect a Netbook can be had for $200 or less, and a full-scale laptop for probably $300 or less. My personal favorite online retailers are Geeks and NewEgg. (TigerDirect has a huge inventory as well, though I have had issues with them in the past, and generally won't use them anymore.)