thread Oh good grief, this is the greatest scam ever. I don't know if I'm annoyed of in awe
http://www.oxygen4life...
permalink $49 for air is freakin genius
http://www.oxygen4life...
permalink If you sold gases by weights and measures
how would you deal with helium? Presumably you have to sell it in reverse, heavier measurements would be cheaper.

I'm going to stop thinking about this now