Just to give an idea of what a tub set up costs; I just spent $97.01 for my new quaratine set up.

Ranco Thermostat- $69.99
1 foot 11 inch flexwatt- $3.50
1 set of clamps for flexwatt- $5.00
Tax and shipping- $18.52

All I need is a tub which will probably be $3. So grand total I spent $100 for a reliable set up.