You can find great deals on aquariums and gear. Also believe it or not, Petsmart sometimes has great deals on tank, hood, light and stand combos. But you have to catch them just right. Petco also has clearance sales on tanks and stands (sold separatly though)
We got our 80g with 2 lights, glass top, friggin heavy oak stand, gravel, fish, decor and a CO2
regulator and tank for $225.00 on craigslist. And a Petsmart we got our 120g stand, light, glass hood, and stand for $379.00.