The pricing isn’t extortionate. It’s literally just them having to pass on the insane price of RAM (itself priced due to the massive demand and supply shortage).

And you’re right that Apple is hesitant to change prices on models. But that cuts both ways. Apple notably held off of bumping prices across their product line for a considerable amount of time, very plausibly eating the cost of RAM price increases.

It would definitely be atypical but given the unique and extreme nature of the current situation, I wouldn’t be shocked if they cut prices somewhat once the RAM situation relaxes.