Dynaboard shutting down does not relate to pricing for end-users.
From a Low Code product perspective, we were still able to build a beautiful and functional product. Our product unit/engineer ratio is much higher than our competition (see, for example, Retool), which allows us to provide the best value for our users. Regarding the transition, I don't see any indication from the note you posted that users will have to rebuild all their apps. Rather, the founder is saying he will provide more information and possible steps. Who knows – maybe it would be integrated into Figma? And Figma would gain great runtime and IDE capacities?