Another faithful Bic user here. I bought a $50 lighter about a decade ago and discovered that it didn't work above 10,000, as confirmed by the manufacturer! Back then, I was not able to find a single "high-dollar" lighter that would work above 10,000 feet, so I stuck with the Bics. They're cheap, and they have NEVER failed me, so I'll keep using them. I won't get suckered into spending more than a buck or two for a lighter ever again!
