NeonZ
Member
It was much, much bigger than Precure back in the days; the ratings and toy sales were insane. It didn't run for over 200 episodes for no reason.
The ratings were bigger than Pretty Cure's, but the toy sales weren't, which is likely the reason it didn't become a permanent franchise and Toei eventually went with Pretty Cure and stayed with that format. Doremi's four seasons averaged 5.8 billion yens per year, that would be bellow any Pretty Cure series in toy sales, even Splash Star.
http://www.bandainamco.co.jp/ir/presentation/pdf_bandai/04_inter_keisu.pdf
(Doremi season 2 and 3 do beat Splash Star by themselves though, but none of them even approach any other Cure series, and season 1 and 4 had lower numbers)
Those sales are still pretty high compared to some other franchises, but they're still only a little above half of what Pretty Cure makes annually. There's a reason Toei hasn't tried to turn any Cure series into a Doremi-like show.