Do custom or manufactured computers cost more

I was wondering, do self-built computers ( which cuts out the cost of labor ) cost more than computer manufacturers ( which buys parts in bulk enabling steep discounts ) ?

more expensive pieces because you dont get the mass rebatte HP/dell etc get
Not rly, you're getting ripped off

if you build it for someone you know, YOU will be made responsible for EVERYTHING thats hapening with the system
lol, true. Blame MSIE.