Looks like you can buy the Nike Vaporflys 4% on Nike.com now. How many people are going to “run” and buy them right now? There could be a whole bunch of Boston Marathon Qualifying Times and Olympic Marathon Trial Qualifying Times this spring.
https://www.nike.com/t/vaporfly-4-flyknit-unisex-running-shoe-v7G3FB/AJ3857-400