I got a 60 cu ft cylinder refilled today - it was $52!! IIRC, the last
time that I refilled it was $30+- ('course that _was_ 2009). Has gas
gone way up, does it depend on where you are (I'm outside Boston), or
did I just get hosed? This was Airgas.

BTW - I discovered something this emptying: when the tank pressure gauge
shows zero, there is still can be a lot of gas left. As long as the
"flow" pressure gauge is registering, you're good to go.

Bob