The <5% who are mega influencers on one of the most influential social networks on earth, as opposed to the <5% comprised of the dorkiest people on earth (not that I have anything against dorks, seeing as I myself am somewhat dorky).
You couldn't even wear Glass in Silicon Valley, land of graphic tees and dad jeans. I could imagine seeing these anywhere from Santa Monica to NYC or Lake Tahoe to Macchu Pichu.
Quadcopters, 'hover boards' are a good example. Lots of people age 13-30 buying them, and that's people can't save money. Buying stuff they don't need and would not use - only to look cool.