A way that people may possibly be getting ripped off and getting less stuff than they think they are getting

I've just been reading Anthony's Scrambled #3 ($2.50 at Rediscovery, Sturt St, Ballarat) about his pen leaking on the plane, because of the lower air pressure.
Then a couple of pages later Anthony says something about dipping his pen in Coke on the plane to Vancouver.
Then I thought, People are probably getting less stuff than they think they are! Because of the low air pressure, the Coke (or any other beverage) would be less compressed and if the Coke had been served on the ground! Aaaaargggh!