Hehe yes I want some Empire stuff too, but there will be six months or so of SoM releases apparently (or a few releases over six months, I'm not sure) so I'm sure we will see something. I know Dorfs are getting some love a bit later too(Runesmith and possibly some other things).
Oh, prices are (apparently)
Mount & Monster kits: £31
Regular Monsters: £20.50
Terrain: £20 (for packs of two)
Characters £8.20