Good deal for that CPU. Still retails for $322 USD.
http://www.newegg.com/Product/Product.aspx?Item=N82E16819115211You would be going with a desktop computer instead of a laptop with that CPU though. And would need to build a complete desktop computer.
Costs for the build:
OS Windows 10 Home will cost you $100
Motherboard about $100
That CPU for $70
RAM for $50
Hard Drive for $50 ( cutting corners )
Computer case for $50 ( basic full tower cheap case)
500 Watt Power Supply $50
DVD-RW drive $25
That puts you at $495 and you still need a monitor and keyboard and mouse and video card which sends you outside of your budget by about $285. $100 monitor, $20 keyboard, $15 mouse, and $150 Video Card