Very informal stuff there from that link. Thank you AZ.
I did some number crunching. What I found out was that the Cree A19 and A21, sold from Homedepot.com, offer 9.5true-watts and 18true-watts respectively. They are priced at ~$10 and ~$20 respectively, depending on whether you get 2.7k or 5k. That comes out to ~$1.1 / per true-watt. That seems pretty decent when talking about Cree products.
I'm still stuck on the shell for the light. In your blog, you included a picture with the mentioned lights. They have shells or angled aluminum casing but I've had some issues with googling these. The best thing I could come up for this solution was
http://www.ruralking.com/woods-brooder-light-10-5-shade-with-clamp-6ft-cord-0166.html - which isn't a bad deal except the width and angle of the shell itself. Ideally you want something that isn't too narrow but not too wide.
Any tips on this?