I want to build a cob DIY led. I would love to not spend a hundred $'s on a Cree cxa3050 w/ a suitable driver. I found this add on eBay http://m.ebay.com/itm/300916307742?nav=SEARCH. The color temp on the warm white is right on par with an hps. It claims to put out 9,000- 9,500 lumens on a...