The cost for compressed gas is all over the map around here. The lowest I've found was at Harris:
50 cf (15 pound) carbon dioxide tank (full), $51 (w/out empty to trade)
155 cf argon (full), $225 (w/out empty to trade)
155 cf argon (swap for full cylinder), $50
I was planning to refill my pair of 40cf argon cylinders, but they were charging so much to fill those that it made more sense to just get a 155 instead.
I'm still looking to fill my small acetylene/oxygen cylinders from a Victor mini portable brazing pack. They wanted about $75 to fill an 8 cf acetylene and 20 cf oxygen which seemed really expensive.
Does anyone know of a good place to get reasonably priced fills near Sacramento, CA?