Thanks a lot for all your nice input and feedback!!
I already set up my own website for selling photos via PhotoDeck.com (
http://archive.northlandscapes.com) - but there is almost no traffic on the site and I'm not so sure how to present the images. I'm a fan of browsing through photos rather than using the search - that's why I grouped the photos into collections with similar moods/looks/topics. But this might not be the way my potential clients like to look for a photo ... But the technology behind PhotoDeck is awesome - a really powerful tool for selling photos. Maybe I should take a couple of days to set the website up properly... But have to have a solid concept first.
Thanks aswell for the links to Scandinavia agencies - will look into those later today.
I also checked
www.4cornersimages.com - but don't really like the contract details. At least 3 yrs and not even sharing the photos on social media sites (which propably also includes portfolio sites like Behance). And since Behance has generated some nice deals so far - I won't give that up easily.
The longer I think about it, the better the own website distribution idea sounds - I do mostly webdesign and interface design as a freelance desinger
https://dribbble.com/JanWaider - and I also do know how to do the basic SEO. And I do have time on my hands
Did not push my website archive.northlandscapes.com yet, since I wasn't really feeling fine with the way it is right now. Still needs some improvent/concept. Also not so sure about putting the whole catalogue vs. only the best 200-300 photos on there.