I have a 1 gallon (5 pound) propane tank, readily fits laying down in the slide out drawer and just put a small metal pail over the valve area when I store it. I had to get a 6' adapter hose from a standard OPD tank to a Coleman input. Zero problems with it. Obviously depends on usage but I have only refilled that tank twice (2nd time a week ago) and refill was $3.00.
It all fits (with my Cuisinart Grillster) very nicely in the storage drawer along with other stuff.
Don