I didn't see any price on those water cans. I also noticed that this is a Canadian company so you have to factor in shipping to your AO and custom (duty) fees when you purchase. You can probably find the same cans from a USA company that may save you some $$.

As for water cans in general, the 5 gallon water cans found at most outdoors stores will work fine. We have a couple that see heavy use and are holding up fine after 4-5 years. If your purchase these, ensure that you get the type that has a screw on cap for the vent hole.