So far, I am in my project for about $110.00.

(8) cree LEDs
(4) drivers
(8) reflectors
(8) baby heatsinks
(2) long copper strips with holes in them?
(2) copper end caps
(2) copper pieces of pipe.

I haven't really shopped around to get the best price at all, just saw stuff that I thought may work and got it.

I am building as I go so I am wasting more money there... When I buy stuff I end up not needing.

So far I don't need the (2) pieces of copper pipe. The drivers will power (3) LEDs but I am only using (2) each. Don't know about the reflectors and heatsinks yet... They have only made it Colorado so far. Somewhere, there is a dude walking down the highway (cross country) dragging a big wooden cross... And in his pocket are my reflectors and heatsinks!