$2.82/gal?Per gallon not terribly expensive
A 210 with stand and filtration is a good bit more than $600.
For the 4 tanks I have now running and not, I paid (without filters)
$.50/gal 10g
$2.50/gal 10g
$0/gal 55g
$0.9/gal 90g
They come up, and you pay what you must
Ponds aren't really cheap either. I understand the price. not good, not bad, fair I guess.