The enclosures have been around for a few years, but they were pretty pricey back then. If I had to do it again, I'd get less fancy. These have digital readouts on each bay, etc. Stuff that looks cool, but is essentially worthless.

Here's the link to the enclosures I use, but like I said, now that I'm (hopefully) smarter, I'd go for less glitz and glam to lower the cost. http://macgurus.com/store/ecom-catshow/SATAEnclosures.html

The drives were acquired over time and costs are dropping like mad.