I reported these sellers several months ago, a couple of times via online help, and when they kept appearing I emailed Amazon Security. No response.
They've been active for a long time now, with *many* different seller names, on possibly all Amazon EU sites (often Germany), and target popular electronics, camera lenses etc. The descriptive text always says to email an address prior to purchase and "used for advertising purposes in my store only!!!" etc. They have slowly changed the format of text, presumably to work around keyword/email address searches done by Amazon.
It only pissed me off because it triggered my CamelCamelCamel & Firefox Distill extention alerts.