Great idea and what I was thinking....bring large supply, maybe some adaptors, charge market price plus....the whole "what is cost to get it elsewhere?" Don't rape, but a markup is sorta OK....

No, never really needed O2 in eastern flatlands....most I will need is a diamond climb in SE NYS....last regular badge flight out of my home field (06N.....Middletown, NY....).....I have earned EVERY badge from same home field....from "A" through gold and 2 diamonds....missing diamond altitude.....I believe 6 in NYS....I would love to add a 1000K from here as well....slight chance.....