I'll have a look at the demo, internet chatter on this one has increased enough to make the effort.
I'm not fully sold on the idea of real-time between battles, but only because I remember the original game (Where I would always die by my army being 'converted' into ghosts) and early HOMM series.

so, does anyone know what form of DRM is used in the game?

From the Steam Forums
Retail: Securom disk check, no activations or limits.
Digital Distribution: Digital Distribution's service DRM.

I'll confirm that the retail version uses Securom 7, disc check only. I personally haven't run into any issues with it.

I almost forgot... Warning everybody: If you start playing King's Bounty you will probably be totally addicted for two or three weeks. I've warned you.

Well, I just ordered it from Amazon for $14.98 along with the upcoming Civilization IV Complete Edition. This way I paid no shipping costs for either.
$15.00 sounded like a good deal for what appears to be a decent game.

15$ is a steal for this game.

ah damn.. I had decided that the game was probably not worth it.. now I´m going to have to check it out anyway. But I have so many games I still have to play!
<counts>
16, actually.