Sorry for not updating this thread for so long time.

I did receive the VG´s today. I bought them from Zlin Aero (http://www.zlinaero.com/eng/index.php) where they are supplied with their 1:3 scale Bobber. The price shipped to my door was about 125€, which is quite a lot, but since they are sold by a company that normally sells full size aircraft, I guess that would be expected.

They are made from thin aluminum plates, cut and bent to shape. So if I ever need VG´s for another project I guess it would not be too difficult to fabricate them myself.
I bought them anyway since I have no experience with VG´s, and I wanted my first try to have a fair chance of success.

The set contains VG´s for the main wings along with the bottom of the stabilizer. 16 pcs. for each wing half, and 7 pcs. for the bottom of each stabilizer half.

It´s supposed to be taped to the structure and testflown until the best placement has been determined, whereupon they are to be fixed with glue.