I'm mentally prepared for the base version to cost me the same but the car would be equipped with less. The reason I think this will be the case is because the base is supposed to cost more than the FE when optioned up to be equivalent. So for example, we might get nickel/dimed for things like leather dash, forged wheels, etc., but since I won't be selecting things like power seats, then it will end up being roughly a wash.
I guess we won't know for sure until the end of this year with the base configurator is released.