I do everything on a roadbike and fixed gear, which are claimed to have the highest risk of getting a flat tire.
I usually have 2 flats a year which cost around 6€. I usually get a new pair of tires roughly once a year "just to be safe" when i notice the rubber showing oddities or they start losing grip a little. I usually go for continental GP (4kII/5k) tires if they are discounted and pay roughly 80€ for a pair.
I'm curious to see if this "no flat" tire will be cheaper and if it can be run tubeless.
Well, as to the last point the metal is providing internal rigidity, so that's why there's no inner tubing.
But agreed. I cannot see this trumping my replacement costs during my lifetime. It's cool, and it might be more environment-friendly, but cost/benefit calculation says no.