Oh hai! I stumbled upon this thread when looking for info on these hones, which I have found to be quite amazing...

I found them on eBay when I was looking for a decent priced finishing stone, and messaged the seller asking if they would sell just the 6"x2" highest ~15k grit stone with slurry stone for $30 shipped, roughly one third of the buy-it-now price for all three ($85 shipped). He agreed. Took about a week for my stone to arrive, and I love it! Worked up a milky slurry and did 25 laps on four razors, two of which I was honing for a friend. I shaved off of one of mine this morning and it was the best shave I have had thus far (been shaving since February this year)! I am extremely pleased with this stone, and glad I chose it over the more expensive Naniwa 12k. I had to look at a cheaper option due to my budget at the moment, and this fit the bill... no pun intended. Seriously though, I love it. Huge shoutout to AJ for helping me out! I highly recommend everyone try these stones if you haven't already.

Cheers,
Chris