fermenters on a budget

Right now I am looking to start a small winery making fruit wine. Right now one of my challenges is finding the right fermenters on a budget. Here are my requirements…

-At least 60 gallons
-Square shaped
-One for primary and one for secondary/clearing and bottling from
-Not too heavy
-I am setting my budget at $400

square is going to be the hardest thing to find.

^ what he said. Round holds pressure/shape better with less material. Why do you need square?

Speidel

Close to square and cheap

These may not fit in your budget but figured I post just in case

http://oenotank.com/

Not sure if they have small squares but a good site to pickup stainless fittings for a plastic tank.