The only thing Mint's lacking is the geolocation of the individual merchants - something they can garner in a lot of cases from the merchant name. The grocery store I frequent includes a store number in the transaction name, for example. (Mint definitely has the "how much" bit - they've got each transaction individually, including the amount.)

On the flip side, Mint has all the rest of the credit card data for the person (across potentially many different cards and card networks), savings and checking accounts, brokerage accounts, mortgages, car loans, student loans, and tax returns if you use TurboTax.

I think that balances out the equation pretty handily - that amount of linked, collated data should easily be worth more than a single CC can garner.