I HAVE to get an upgrade in cooling for my video cards, which I don't plan on upping anytime soon. Righy now its looking around $350 for just my cpu and gpu blocks
Yea it is ridiculous, but all the parts are really custom machined. You can expect high prices.
My total for my 2rads, pump, CPU block, fittings, res and fluid was around $500. I don't have an exact number, but around there I would think.
IDT I will ever do it again, when I upgrade to Ivy-E in January I will just buy the new H100i to cool it.