If you place the Alex Bregman contract in a vacuum, focus on the $120 million price tag for (up to) three years of service, factor in Bregman having all the leverage with opt outs after each of the first two seasons, and assume the average price of a win above replacement on the free agent market is about $8 million, the Red Sox got boned in this deal.
Over the next three years, Bregman would need to put up 15 WAR for the Sox just to break even ($8 million x 15 = $120 million), and that assumes he doesn’t do so well he opts out to test the free agent waters again — this time without a Qualifying Offer attached.