[Gregstrom]

35gp IIRC, and 2.25 (->2) siege strength, which makes them inferior to human troops except for resource cost.

Edit: Except... if you're limited by the number of commanders you have available for shuffling troops around, then you can move twice as much siege strength around *per commander* than you can with humans. Oh, and if you're going to face things like Fires from Afar then they're more likely to survive than cheap human troops.