Where do you live? Some of the folks here might be able to help you with suggestions of where to go in your home town. Also, Petco and Petsmart have much better deals when you go in to the stores than online. Another thing to try is at your LFS (local fish store), ask them at the counter how much it is for a basic 55 gallon tank, without the super-fancy stands they have on display. They might have better deals available than they have shown. If you find a good LFS and explain what you are doing, (don't rely solely on their info, do your homework and ask questions here) they might be able to cut you some deals since you are likely to give them repeat business. I frequent about 4 LFS's here in houston, and they all give me at least a 10% discount because I am in there all the time. Often times, I get better deals than that.