I'll mention it to Barron, but there are a few logistical issues to deal with to make this work.
Airgas is an alternative, though I believe they swap rather than fill. There's also Praxair, but I don't know if they do consumer co2. I didn't know they existed until Neal at TPs mentioned it.
The Fiesty(sic) Goat Brewery est. 2007 & Clusterfuggle Experimental Ales est. 2009
Primary: Saison, Berliner Weisse, sLambic I, sLambic II, IPA, 70/-
Secondary: Orange Blossom Mead, Flanders Red I
Kegged: Fat Man Porter w/ 1469, Fat Man Porter w/ 005, Centennial Falcon w/ Conan, Centennial Falcon w/ Denny's, Barrel-aged Fat Man Porter, Belgian Dark Strong, Dark Mild