50-100 K to fly for 8-10 minutes. Hmm. I dont see this being a mass market attraction and more of a novelty. + there is training involved so one does not loose control of one of thier arms with the horsepower and thrust and end up slamming into the ground or another obstacle.
Its nice to see this technology in its infancy though.
Could you imagine mainstream usage? I get cut off by drivers of automobiles from time to time. If that happened in the air with these turbines strapped to ones arms it could become catastrophic very quickly. A new term would be coined - air rage.