It is def worth the difference if you are buying on CL. I have 2 Performers with the little gas tank. It lasts forever. I use the gas to light chimneys and transfer to other grills and to light in the performer.
Smokemaster Offset*'70 Hasty Bake Legacy*WSM 18.5*'00 Plum SSP*'69 Cado*'90 Red MT*WSM Mini*'73 WSJ