Newegg is THE place to buy a Laptop.
http://www.newegg.com/Laptops-Notebooks/Category/ID-223
I know used Laptops are sort of risky but there is some darn good deals on like Craigslist. Just buy one that is pretty new and do research on the model for problems before you buy one.
But nice to have a new one with a warranty. I guess it comes down if you are a hardcore gamer or not. Most normal ones are fine for P1999. My son and I have ones that rip your face off lol. But they are expensive. A LOT more than you want to pay.