I think they're cheap because the RC cup moved to the q3+.
http://www.motoamerica.com/dunlop-in...for-ktm-rc-cup
IMO i think this is very interesting for people who want to ride street and track as they can use the same tire and still get what the pros are using.
According to dunlop's website the tires for the small displacement bikes should be available in January 2018.
http://www.dunlopmotorcycletires.com...rtmax-q3-line/
Pricing should be interesting as a set of the 120 front and 160 rear are about $270.