There was an airline in the US that tried this briefly. You and all your stuff (as I recall) got on a scale and that determined your airfare. The backlash was immense and immediate, but I think they were onto something and could have weathered the storm.

I can see it now 

If I get my BMI within normal my flight will drop $500 if not I’m stuck paying $750 to fly to LA

BlokchainB

perhaps the world's best public health effort 

... and all it took was some ballsy and ruthlessly greedy private equity firms?!

Stacker_Stocks

econ

easyJet's Apollo Mission: Private Equity and British Airlines (Telegraph, Lynn)

denlillaapan

perhaps the world's best public health effort _ever_... and all it took was some ballsy and ruthlessly greedy private equity firms?!