While terms of the agreement—which has yet to be finalized—remain murky, it is believed that ESPN will pay somewhere in the neighborhood of $2 billion to $2.25 billion for the package.
ESPN, NHL on Verge of New Multiyear Media Rights Deal – Sportico.com
Would work out to about $285 million a year (on the low end) with another half of the package to sell (though that one will be less).
Probably looking at a little over $500 million a year in total when both packages are sold.