Use the voucher code GMG25-UAAHK-6AI9S to get the Mount and Blade Collection for $5.62 at Green Man Gaming.
The collection comes with:
Mount & Blade
Mount & Blade: Warband
Mount & Blade: With Fire and Sword
The collection uses Steamworks, so Steam actiation is required.
I believe this is the daily deal for 11/1/2012.