Well its on a special price of AUD75 for a limited time (normally around AUD200+ I think?) - you reckon its worth it?
could be, or just torrent it, and try it first. then go legal if you like it (not promting illegal software in any way)
Let me warn you that it has changed a lot from office 2003, the whole menu system is different so you probably won't be able to find anything for a few weeks.
I can't really see anything revolutionary about it, just looks prettier to me
it is completely different, and takes a while to get used to (after 4 weeks i was still using the help daily), but imo its a lot better laid out once you get the hang of it.