d3track
Are you sure about that?
Eyeballing each store to see has the cheapest propane exchange. (so far, it's Dominics at $17.99)
When your propane tanks are all empty, and you think "dammit, all I want is a grilled burger..." but never curse the fact you used all the propane (even the backup tank because I'm a lazy sob) brewing.
I've been using propane express, $20 flat, they come pick up the empty and leave a full tank. Lazy at whole new, and convenient level!