I purchased one of these from w mart last year and it has come in very handy filling the tank on the trailer for boondocking and camping without water hookups. Traveling today through Illinois I stopped at 3 stores to try and find a few more....no luck. Seems they are phasing them out. Amazon wants almost double the cost. W marts price is 9.95!!!A steal in my opinion. You can check Walmart on line for the stores that still have some.
Here is a link of what I am talking about.