Re: PROPANE SALES !!
If you have a small town nearby, where there is farming and homes "in the country" then you will probably have a propane dealership that delivers propane.
All of them that I have seen have the capacity to fill loose bottles or vehicle tanks. Ours is between $2 and $3 per gallon.
Actually, when I have 200 gallons put into my home tank, then I can talk the man into putting 5 or 8 gallons into my MH.
Many RV supply stores will refill, also.