You can get relatively cheaper 5 gal cans of kero at your local bulk fuel jobber.  I think, at least that's where I get mine.

The 5 gal pails are abt $6 and the fuel is at market price.Last fall I paid about $3/gallon, shoulda bought more.

Then they just refil your pail.

I used it a fair amt this fall and is was OK to our noses anyhow. We never take the kero heater outside during season.

We've been running a 9000 BTU KeroSun radiant 11 I think.

Also, in another 2 month or so is the time to pick up deals on heaters on ebay again. Damn time flys, I've posted this for 3 yrs now.