I agree it may be a good deal, BUT you have a nice new saw that does cross cutting the Kapex isn't going to do anything that DeWalt can't.
If you didn't have a new saw I would say jump on it. Or if you had needs to where more than one saw could be put to use I might get it. But one person with a new slider already in their arsenal can buy a lot better things with 900.00 than a second miter saw.
For ME personally a new Kapex isn't worth 900.00 let alone the retail.
What DeWalt do you have? That makes all the difference in the world in how this question could be answered.