Cheapest it's been; the site is the .co.uk version of Gamersgate, which offers a lower price after currency conversion. It is not regionally restricted.
Use the code elder-geek.com for 5% off, or the 20% compensation discount will be added for those who have it, bringing it to around $6.
The Professional Edition only has a 25% sale, so it's not worth going for DLC this time.
It may come with the Hitman: Sniper Challenge mini-game, as it's unclear yet if GG actually gives you the code to redeem, even after adding it your your game library.
Daily deal in GG's Spring Sale, ends around 5 pm 26/4.
Damn you op stop tempting me. D:
I have so many steam games and a pile of ps2/3ds games I need to play too DX