well if he really isnt gonna use it for any serious usage you might be better off going with a grey box computer like a dell or hp if it is cheaper they get serious volume discounts on hardware and software and are often cheaper than a low end custom built
No, because then he would get lower quality parts for his money. Hikaricloud has a great build that would be better than any prebuilt. Plus he won't get all that crapware that comes with prebuilts.