Droptick sells one promoted link a week: the price opens at €10,000 every Monday 08:00 Berlin and falls along a hidden curve until someone takes it. Monday it resets.
The mechanic is not new
This is a descending auction — the price starts above what anyone will pay and comes down until a buyer stops it. Dutch flower markets have sold this way for over a century: the clock at Aalsmeer runs down, and the first buyer to press the button gets the lot.