With the stand, hood, and filter that seems reasonable.
I just bought 4 10gal, a 5.5gal, a 3gal ecplipse, a really old 10gal long (30x7x12) plus a box of misc. stuff (powerheads, air pumps, HOB, gang valves, ect) for $25. Gotta love garage sales.
I have seen better deals and I have seen worse. in my area with craigslist.com I have seen them for $100-150. But it is all relative. I don't think you would be getting ripped off, and if there are no other deals in your area then it is the best deal in town.
If the tank and the filter are still in good working conditions, then these 2 item alone will cost you that much if bought new. It is a good deal. You can always touch up the wood yourself. That is an easy project.
yes, but if you go to jan's tropical fishstore in romulus MI you can get a complete 55g setup for $180, although I'm not sure what kind of filter it has or if it comes with a stand.