I have what I believe to be a Current USA 48" power compact fixture, but I may be wrong. It came with a tank I bought and I don't need it. Everything works, but it could probably use new bulbs (again, no idea how much use they've had since it was part of a used package). Asking $50, OBO if that price is high. I may also consider trades for livestock or other equipment I'll actually use.
I also have some filtration stuff available from the same deal. Wet dry / sump, overflow box, AquaClear/ProClear skimmer, etc. FWIW, I use the skimmer's big brother on a 65 gallon reef and I'm really happy with it! If interested, hit me up and we'll talk price or trades.