That is good information. It is interesting to see how much less it is at WalMart. No one can argue (I think) that when buying at WalMart the quality is not as good.
You can go on Blue Rhino's website and find all the places that carry it near you. Unfortunately, the site does not have the cost.
https://bluerhino.com/propane-finder
A couple of other local stores and prices:
Lowe's $19.97 5% off if you use a Lowes Credit Card
Hannaford $19.99