A few sites are:
- PC Sales - It lists the sales on Steam, Gamersgate, Direct2drive and Impulse.
- Pricespy New Zealand site that has a large database of retailers (can filter by price etc.)
Men of War: Red Tide - 76% off Link $6.00 USD
Men of War is a really interesting RTS. It has major micromanagement and is very strategy based. There are plenty of mods for it and Red Tide is the newest out (released earlier this year I believe)
Just Cause 2 - 76% off Link (Courtesy of Radnom) £6.49