Replacing long-tube fluorescent lights

Well, this turned out to be easy, at least as far as you can get online (that is, without actually climbing up and replacing the bulbs). I simply Googled "replace long-tube fluorescent ceiling fixture compact fluorescent LED" -- since Google pays no attention to "stop" words -- and found Green Energy Management LLC, whose owner, Cort Cary, has apparently been in the energy saving light business for more than 30 years (according to the site). Long-tube fluorescents (okay, it took me a couple of wrong turns to learn the jargon "long-tube") apparently are also known as T-8, and LED versions save 75% of the energy used. Typical payback, per GEM, at least, is a year. What are you waiting for?