At one of the auctions I go to there are often pallets of various troffer lights. Recently I was helping my friend load what he had bought and saw someone throwing slightly damaged one in the dumpster. I asked if I could have them and they gave me two. Slightly dented. I hooked a cord to them and they work. 2 X 2 LED lights. Now I just need to work up the energy to install them. And keep my eyes peeled for more. Free is good, don't you think?
And I agree with Bill. LED's appear to be emerging technology. Might be better to wait a while. For now, I am sticking with my T-8's. Unless free comes along again.