The certainty is that if you buy an original AS-D1 (new or pre-owned), find you don't like it and decide to sell... you'll be able to recoup most of your investment. The coming redesign is an unknown.
That's what I'm going to do. Just ordered it from Italian Barber this weekend. $190 ouch! Maybe it'll become a collector's item!
It is not for everyone but out of all the razors I enjoy, it has turned into my number 1.