Most of that stuff never goes on sale- the couture gown industry globally is propped up by maybe 100,000 Slavic girlfriends of fatnecked oligarchs.
Those designs are then watered down into individual touches on whole lines which might take say the collar and become a 'thing'. The wacky aspect is to create an aura of aspiration so that you and I buy the perfume in the shaped bottle in a blind panic on December 23rd. Gaultier is the master of that game. Skatepark bits look alright in that, though.