I use a Dell 17R Switch with an upgrade on the graphics and I put another 4GB of ram in it, at the time is cost me 1080$ Canadian. But that was 4 Years ago, should be wayyyy cheaper now. Probably 500-650$.
Specs:
GPU: Nvidea GT525m(The upgraded one) Intel HD4000 Graphic (Comes default)
RAM: 8GB (I upgraded from 4GB)
CPU: Intel i3-2310M @2.10Ghz
OS: Windows 7 home premium 64 bit
Screen: 1600x900 17.3" HD screen
I got about 80FPS vanilla minecraft when I bought it, now I get about 50FPS due to minecraft updates and the laptop itself being old.