This really is a great deal if one can take advantage of it.
Aerospace, do you actually know that they raised the rates of your sailing due to the sale? I had been monitoring a number of Celebrity sailings with an eye towards booking on board Summit in March, & not one of them went up after the announcement of the sale. So rather than waiting, I booked to take advantage of the sale & saved some $$$. If there was a change in the cost of your sailing, I would think it is more a result of the bean counters that are always raising & lowering the price due to how a particular sailing is filling.