E publishing and new range of various devices (like Samsung Galaxy and so on) which is put on wider use, give additional burst to E publishing. Some publisher get more and more sales of their digital version f the paper magazines.
I think that your proposed prices are tooooooo hot... few € could be all right for article (if it is 15 pages). Don't forget it is crisis now and people try to reduce their expenses. Also point of the E publishing is to turn part of the hard core printer publication users on your side.
Cheers
