A regulator may run $25 and the bottle I'm not sure, see if HF sells bottles, if not your local welding supply store could hook you up with a bottle fairly cheaply. I would get the bottle and regulator now and not even screw with the flux crap.
I'm in the eastern time zone, current time here as of this posting is 7:30 pm.
Well I dont mind dropping the extra 25 for a better tool.
I am on the very western edge of eastern time, but the post time tags says its 5:30.

Unless I can find one at rural king tommorow. Ill check online after I am done posting this.