You probably won’t see a wide selection of these things available at Home Depot and Lowes until prices come way down. And after prices drop a good bit and they start selling a wide variety of these lights at the big stores, prices will slowly but surely drop even more as the industry becomes more competitive. With prices being as high as they are and energy efficiency being so poor on these things the big stores won’t waste floor space on them because hardly anyone would buy them. Look at these lights at the site you linked me to. When you look at the number of lumens produced for each watt used, most of them aren’t much more energy efficient than a common incandescent bulb. CFL’s leave them in the dust when it comes to energy efficiency. I could maybe see using some of the cheapest low wattage ones in areas where you hardly need to add any light and where replacing burned bulbs would be particularly difficult/expensive. Otherwise, they’re a rip off, not worth the incredible premium in price. I’d use something else wherever I could and wait for places like Home Depot, Lowes and Walmart to start carrying them at much more reasonable prices. If you buy a bunch of these today at these high prices you’ll regret it in a few years when they are much more energy efficient and going for a fraction of their current price.