W/ 50 @3W Royal Blue emitters on star bases for $10 straight from China..
Also (preferred)
@ 10pcs PHILIPS LUMILEDS LUXEON Rebel ES 3W Royal Blue 450nm~455nm High Power LED
for $12....
you have to work hard to screw up..
To do quality DOES push the limits but your reward is one built "your way"..
to be honest the main "wrench in the works" is heat sinks and controllers.. Rest is a pittance for the most part..
Then again one can blow the budget wide open...