As Adam said, the asking price probably will go up if they prove to be a new line of Phantoms...for a few days. The problem with the way the mystics were marketed is that once the buyers know they have been sold for $2500 or even less they are not going to accept paying a whole lot more than that no matter what the super turns out being. Exactly what happened to the Mojaves. IMO no morph should ever be sold to the public until the super is proven but most people are far too impatient for that.
I also really doubt Phantoms are actually being sold for 10k, but that is just a guess. Asking price and selling price are usually two different things.