I don't understand why I need to upgrade from Core to Extended to find out if Ultimate is right for me?
The intention is to tier the paid version of the product in terms of price and value, but that may not be the best place to do it.
That said, as soon as you receive your Exposure Report by email (typically within ~24 hours), it will include screen shots for the data brokers covered by the Ultimate plan, so you will have some visibility there for help deciding.