Well-documented is the fact that $17 million/year makes this likely to be the 5th highest contract (once the SEC finishes their renegotiation in the coming days or weeks).
Less well know are some of the nuances. For example, did you know that the annual payouts start out the same as the old contract and gradually grow to $23 million/year? Did you know this is the biggest single investment for ESPN? Did you know that under this contract ESPN will air more ACC sports on more multimedia platforms (TV, cable, internet, and mobile) than any other league?