I checked local ads for tanks for sale, and all of them are either too small, or way to big for my space (I could never fit a normal 55 tank where I live right now, not and keep my work space which I need). The few tanks I have found that seem to be in the right size range were being sold with fish. Maybe if I didn't have Fishy I might be interested in buying a set with fish, but at this point I need a tank for the fish I already have.
Here are the two tanks I'm currently considering for when I can get the money.
Aqueon 36 Gallon Deluxe Bow Front Aquarium Kit ($180 normally but on sale for $135 right now) (Can't get the link to work for this one)
I'd have to find, buy, or build a stand for it but I like the looks and it isn't really that expensive. Most of the reviews suggest upgrading the filter though so I wonder if it would actually work out any cheaper than buying a tank and stand set up and getting the filter and other supplies separate.
Marineland® 56 Gallon Column Style Aquarium and Stand
($300 normally but currently on sale for $240)
This one is bigger, and comes with a stand, but is 100$ more expensive and I'd still have to buy a filter, gravel, ect... Plus, I'm having trouble finding filters that size to compare reviews and figure out which would be best to buy if I got this one.
I'm going to keep looking for a used tank, but fish keeping isn't really a huge hobby around here so finding something bigger than a ten gallon that isn't too large for my space and/or currently occupied will be a challenge.