I'm starting to admire Steam with all the sales going on. Steam folder already at 60GB and I'm pretty sure it will triple up very soon
On the side note, I just got my copy of M&B: Warband yesterday and surprise, surprise, the key works for Steam

And knowing TaleWorlds, it's DRM free so I can install it on any other PC from a physical disc as well, using the same key (can't play multi on several computers at the same time, but it's not a problem as long as you play single). Also, the game costs £25 on Steam and I got it for £10, there's a massive difference between general pricing of Steam titles and their retail equivalents.
WTF? You can just backup the Steam folder and move it around as long as you sign in to your account. It's never been easier tbf.