All in it's about 10K US.  It would be pretty easy to make one for considerably less by using more "standard" options, you'd be able to do all the same stuff, just a bit slower.  http://www.cncrouterparts.com/index.php

lesten up idk if i have to adress this to you but i'm angry!!! u see i have a dell gaming laptop (inspiron 15 7000) the problem is... the battery only last 3h or so that means i have to constantly be near the power output and that's not acceptable that drive me crayzy i want to bbuild a costume battery four times more capacitr less than 2 pounds flat or cylindiric compatible to the laptop and i don't want to pay more than 300US dollars i've done a lot of resurch but i still can't find the solution