I just picked up a 10g tank, lid, uv light, 2 castles, 2 filters, heater, thermostat, 2 bottles of betta flakes, water treatment kit, and a water test kit off of craigslist for 50$.
The only thing I needed to do was replace the light, and buy new carbon for the filters, but other then that, was it a good deal in your folks' opinion?
The tank is clean, but will need to be cycled.