UpdateI talked to EH today. Here's the skinny:
There is a fellow that is sending his UIM for a "new method" of honing. Something about backflow sumpinerother. The point being, this new method is supposed to bump up the flow by a significant amount. He's expecting something in the 270 cfm range, IIRC (I didn't write it down

)
This new method should be setup, performed, and flow tested within a month.
The following prices are the
estimated costs for this new method (if it proves to provide more flow):
Normal price - $395
Group buy - ~$330, down to $275 with 20 people.
I was told that an "organizer" should send EH a list of confirmed buyers, have the buyers send EH their UIMs, and once the bulk of the UIMs arrive, they'll setup their machinery to do one UIM after another after another. (Wise business practice, IMO).
Estimated turnaround time: 2-3 weeks to get all the UIMs done.
Questions?