I paid $100 for my 55gal drilled tank, lots of used equipment (skimmer, pumps, plumbing, etc) & a 30ish gal sump, and a few bags of salt. My hubby built me a stand and we built a hood, then I've slowly been collecting all of the more expensive stuff ever since. Including fish, rock, sand, lights, food, I probably have about $1,000 in it now. The classifieds are a GREAT place to look if you don't want to spend full price and don't mind having used equipment. There are always people getting out of the hobby who will sell complete setups for a very small fraction of their original cost.