[Endoperez]

No. This has been discussed previously, and Shrapnel Games' business model is not to lower prices. Most games sold in physical stores make net loss, and only big publishers can afford throwing various games at the market in the hopes that the few good ones make enough money to cover the losses, or something similar.

There are various holiday sales. Try around Valentines, Easter, Christmas etc. Also, the FRAGS! newsletter will inform you about any sales SG has. I never read it much, besides the occassional checking of whether Dom3 is still the best seller. I think it's been on top 3 of Shrapnel Games' best-selling games since it was published.

Besides new nations and spells, there are some interface changes. A screen where you can see income, sites, tax rate, unrest etc of your whole kingdom (and adjust taxes, increase pd etc); little icons for every item commander wears in the map view, ability to set mages to automatically cast site-searching spells, every turn, until they've gone through all your provinces, etc. If the new nations don't interest you, the interface changes won't get you to pick up the game; if you still want to play with more of the same, they probably are worth it. It's still far from perfect, though.