I was wondering if anyone knew of a store...or online store that I could purchase a good, but cheap tank from...preferably between 5-40 gallon tanks.
Try pet petsmart I bought 10 gallon with filter heater for $54.00 + tax
or you could try garage sales.
I do not know if you have Walmart where you are. Don't know if they have them in Canada, but I got all my 5 gallon tanks with filter and lights included for $29.95 US at Walmart and that has been the price for some time now. I think if you just wanted the tank and could get your own lights and filters the tanks themselves are much cheaper than that.
yup, we have lots in canada, closest one to me is only about 30 minutes drive.
Also look at yard sales, and under pet supplies in the clasified ads in the back of the newspaper.