When I looked, it appears that the balls for that you are considering are still available on Aramith's site. It's been a couple of months ago and though not specifically what you are requesting, I picked up a set at Seyberts under the name of the Pro Cup Value Pack for $185 shipped.
Aramith describes these balls as being the similar. This set doesn't have the split semi-cirle though my understanding is the same composition and specification. If you're after that particular detail, the set I'm describing won't cut it.
Quoting Aramith - "this set is also available in PRO-CUP Value Pack (with JR training cue ball and Aramith ball cleaner + Micro-Fiber Cloth), and the PRO-CUP TV versions."
For what it's worth, I quite like both the polish and the polishing cloth and I've even played around with the practice ball.
My apologies if this is taking your thread off topic.