Marten has been around for 20 years now. The three brothers celebrated this with a release of a new recorded album and with a huge speaker and Mingus Quintett in a anniversary edition.
I'm not sure, but Memento are some 100.000€. This is the kind of product that if you have to ask "how much are they" you probably can't afford them. They will be present att The High-End Show in Munich next week.
Att the demo at Marten they sounded really great. Music sounds real, high resolution and a big soundstage when needed. They are up there among the very best, due to my opinion.