I struggled to find similar sales in the UK too.

Since originally posting, I looked up the muscle power being used for this 'enforcement' notice and the company can be found here. They say they:
Quote
* Quickly identify counterfeits across all online channels and millions of product listings
* Identify non-compliant partners and stop “gray market” sales
* Monitor brand abuse in a specific market and analyze abuse trends across different geographic areas
The first is to be applauded, if this is what they actually do, as opposed to blocking anyone other than an official list of dealers from selling. The second starts treading a line where they say they prevent entirely legal, but not officially sanctioned channels from trading. The third makes me wonder how they define brand abuse, is this anyone selling a product, even second hand, in any way they don't explicitly approve of?

Call me singularly unimpressed at this point - it doesn't exactly encourage me to touch AudioQuest ever again.

Prolific music listener / Hi-Fi addict!