the Yama importer, northwestglass.com carries them. ice dripped brew is amazingly rich and delicious, enjoy!
That's the one. NW Glass. Nice people. Problem is that they don't seem to know how to get replacement paper filters for the tower (you'll see) but we've been using a cloth filter from a vac pot in its' place (makes no sense here but when you install the tower, you'll understand).
We've been using ours heavily for over a month now and it not only can brew fantastic coffee (providing your parameters and coffee selection are on the money) but it's a great conversation piece with customers.
Blue Bottle Coffee in SF sells a Kyoto Ice Coffee tower in their store on Mint St. I don't see it on their website but I'm sure if you emailed or called them they could hook it up.