Books that spend ten years in their top 500 aren't slow moving.I don't think Amazon cares about OneD&D.
More than likely, Amazon's probably just trying to clear old, slow/non-moving stock out of the warehouse.
This^It's probably just that D&D is on the general public's minds and Amazon knows that it can grab that right now. Much of their sales decisions aren't even up to actual people.
Likely the formula Amazon is using includes their own inventory numbers and what they can reorder. Maybe Tomb has fewer copies available at the distributor and is heading towards a new printing while the others are more easily restocked?What has me baffled is why Tomb of Annihilation is still holding it's price ($40) so well when just about everything else for D&D is so much cheaper - especially considering Curse of Strahd & Revamped, which are held in such high regard are almost half-off already.
Ha, only 16!Ravenloft is only 20 US dollars