Price to sell laptop? Quality of build?

ToxicVapor

Estimable
Apr 3, 2014
8
0
4,510
I'm looking to sell my laptop because it is too big and clunky for school but not powerful for what I want it to do.(bad Sony Vegas performance, gaming ability isn't where I want it to be)
The specs:Toshiba Satellite P855-S5200
Intel core i7@2.3 GHz
8gb ram
Intel HD 2000 Integrated graphics
500gb hard drive
Windows 7 Ultimate

A site where you input your computer (can't find it again) appraised it for $320. Is it worth more or less?
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Also, I am building my own. How does this build look?
http://pcpartpicker.com/p/3lzBT