below is the link but I do not know whether they will ship anywhere to Europe. Must contact 'em.
Unfortunately, I can not help you - I am abroad right now.
Of course the price is given in Polish zloty :-)
Actually, I use K812 with Meier Corda Classic, overall is a good match except trebles which could be less energetic (however I did not notice any sibilants). That's the reason that mostly listen K812 with AK120 which is more polite :-)
Purchased mine K812 week ago and after 2 days replaced the cable.
They sound much better now, improved resolution, depth, bass.
Cable I bought: HYBRID SERIES
For me, so far, best dynamic HP ever heard :-)