I assume you are talking about a co2 bottle for a MIG. I thought about it after I posted last night.
I got mine from a Matheson Tri-gas dealer. I don't know if they have outlets in CA or not.
And I was wrong about the price last night. It was $101 for an 80 cubic foot tank and I got my same size oxygen tank filled for $8 while I was there.

"It's just a phase. He'll grow out of it." Mama, 1964

1956 Chevy 1/2-ton 3100
1953 Chevy 6100 "The Yard dog"
1954 GMC Suburban Now with a new proud owner.