I am pretty sure the 41qt tubs are cheaper in stores than on Amazon. I don't recall my 41qt tubs being that expensive.

Although, I do encourage to use IRIS, Freedom Breeder, ARS, or Vision tubs. They are pricy, but they don't change the dimensions or design of their tubs. So it would be easier to find replacements in the future. Sterilite and Rubbermaid are constantly changing their tubs. So unless you stock up now, its going to be difficult to find replacements in the future.