it all depends, if you bought all refurbed components you could.
theres a whole sale store I buy all my parts from new and used and they have great deals on refurbished I5's, I7's, Phenom's you name it they got it.
I build all my own units and I build for others.
buissiness has not been as good in the past because people are buying computers to run software like sonar for dirt cheap prices.
some people don't want to max the machine out, they want it for doing smaller projects.
so they go with a walmart off the shelf special and have good results.
this is of course not the way i do it.
but ive learned within the last few years (2 to be honest)
im building efficient DAW's that will run very good.
but they don't have that endless pit of cpu behind it like some of the upper models that cost 2000 bucks.
it all depends on what your doing.
and sonar has grabbed newer users from a beatbox generation that creating there own stuff using samples, so they don't necessarily need to be musicians (quote-unquote) so cakewalk has expanded its user base.
and a lot of those users are using out of the box/ off the shelf computers.
hard to compete with that as a builder.
so ive gone and tested different CPU's, different PSU's, different video cards.
what ive found is believe it or not, AMD's phenom 2- 8 core bulldozer stacks up there with the best of them and saves a couple hundred dollars.
some video cards half the price of others are doing the job.
these tests ive been doing are only a couple years old now but so far so good.