Holly Sheet! Last time I checked I could get my tank filled, a beer and a lap dance for that!The fill station:
I got my tank filled at a welding supply company (AGL in northern NJ) but I have been told that you can go to some fire supply places where they fill fire extinguishers but not all may do it. I paid about $45 to get my tank filled. They had a 3 day turn around time due to not having filling equipment on sight. Although if you don't care they can swap your bottle out for a one owned by the filler company.