Is this shaping up to be the Beats by Dre of keyboards? Take an okay but not spectacular product, slap on a name from an well known and respected name from the industry, and ride to combination to crazy profits.
It may seem absurd to spend $100+ on a keyboard to many/most people, but there's definitely a subset of people who really enjoy a nice feeling, reliable mechanical keyboard.
The Filco is the only board in his entire list that's actually a fair comparison.
I wonder what he'd say to people like me who bought a KMAC for ~$440.