I haven't bought much in the last few years but this is my setups.
3---1.5 gallon betta tanks from Petco, Regular $27.00, paid $6.00 each with a small light and filter.
1---3 gallon critter keeper with lid, excellent condition from yard sale, $1.00.
1---5 gallon glass tank, FREE.
2---5 gallon Aquascene TOP FIN tank setups from Petsmart (new), FREE except for the $2.00 paid for each of the used tanks that I turned into Petsmart.
1---10 gallon setup from Walmart, $7.00 at a yard sale.
1---10 gallon glass tank, $1.00 at a yard sale.
1---1.5 gallon vase, .25 cents at a yard sale.
1---29 gallon glass tank, light and hood, given to me FREE.
2---29 gallon metal/iron tanks, FREE.
1---10 gallon wooden stand from my dad, FREE
TOTAL=$29.25