LF frag tank/cube tank

[michaelis88]

Was thinking $20 for 20gallon standard tanks. There are lots on the forum but all of them are at Alberta.
I would buy the ADA as brand new cuz it's not expensive, only $150.
But since I'm looking for second hand, why investing so much. Also fish tanks are harder to sell sometimes, I throw away the previous tanks I had didn't even bother to sell.
As all said, just need a cheap tank, don't wanna invest too much as I won't be using for too long.