I always tell people nowadays it's not worth it to build their own computer from bits, as a new PC won't cost them much/any more..
(Unless they want to have fun, which is why I do it..)
LOL This isn't true at all, I can build a PC for $500 NZD. If I wanted the same spec in a pre-built computer it would cost me double that and in some cases 3 times that.
The other side of it is these pre-built machines from Dell, HP etc etc usually have old tech but they're demanding top dollar for it.