Well, the game seems to be great, and the graphics are comparably decent. If the port is done well, and it looks and plays at least as good as on the iPhone (or even better, seeing that most modern Android Phones have superior hardware) I would be willing to pay up to ten euros for it.
Android needs more good games, and I would be willing to pay for any good, complex and pretty looking 3d game, which goes beyond the homebrew-stuff swamping the android market! In fact I spend more time playing on my HTC Desire HD than on my PC. I need fresh supply! :-D
So, a port of Ravensword would be really appreciated by me, and I am sure by many others too. I'd be willing to pay between 5 and 10