ARA2 is coming... that means there will be new Melodyne version. Introduction offers was good last time.
Celemony is consistent in the price politic, I do not think you can find better offer then what you get when registering the first time.
If you had plans to get Waveform or other DAW with Melodyne, that can be a good way to get Editor.
If you target Studio, getting Editor now and waiting for new Melodyne version can save quite some money (Editor 2 -> Studio 4 was almost the same as Editor 2 -> Editor 4).