From what i've seen, it's usually cheaper to buy the cables seperately. Haveing the cables bundled together makes things nice and easy, but it always seems to cost alot more."
Sometimes a higher cost is worth it when it comes to things being neat and in order.
Personally, I rather pay more for something if it comes pre-fabbed then pay less and have to do it myself. Most of the time, the stuff that was already made, comes out nicer then if you were to do it yourself.
But I posted several companies that should have what you are looking for.
I would go to this one first: http://www.conwire.com
