We can realistically have current Switch version next year for $250, but thats still not low enough price option that will replace price point of market that 3DS currently covers, they will probably need $200 price offer next year espacily with launch of Animal Crossing and Pokemon gen 8.
They could probably get Switch down to $200 if they wanted with a cost-cutting revision. Use a cheaper screen and plastics, etc.
Bet with Liquidlaser: I say PS5 and Xbox Series will sell more than 56 million combined by the end of 2023. (And over 130 million lifetime)