I have a 29gal biocube that I am getting ready to sell (working on getting the algae off the glass, it was neglected a bit) but it is in good healthy condition, has live sand, lots of live rocks, some soft corals like mushrooms, hairy mushrooms, and I think are green ricordea yuma if I remember right. It's just too much for me to maintain two sw tanks right now so I consolidated to one I am keeping. The bulbs are less than a year old, but should be coming due for the yearly replacement in a few months. It does have the protien skimmer, although the little plastic lid seems to be missing. I thought it fell in the tank in the live sand, but I haven't come across it yet. There are many snails and probably some other stuff living in there like hermits. There is some bubble algae, but never had any issues with it taking over, no aptasia outbreaks or anything like that.
$200
Located about 30 minutes away from Cedar Rapids and Iowa City, near Tipton.