czyky
There was (is?) a deal on the upgrade price, it came straight from Melodyne's maker, Celemony. Used to be, after registering Essentials (that you got with Sonar) with Celemony, you had ten days to upgrade to Melodyne Editor for a deal price. Users here reported that if they missed the 10-day deadline, they wrote to Celemony who honored the special anyway. In short, the upgrade deal was from Celemony, write to them and ask if they can do anything for you. A little hassle, perhaps, but the upgrade is worth it (and more).