Steam Summer Sale
I feel kinda stupid. I didn't notice, but anything on the front page that says "Franchise Sale" means the daily deal applies to like, everything in the series. Like, Assassin's Creed Brotherhood is $19.99, which I thought was too high. But if you click that, you find out the first two games are going for $6.79 each, and the three-pack collection is $27.19.
That's also why DA Origins is on sale, which I didn't realize at first since I only saw DA2 on the storefront. Man, I need to pay more attention.
EDIT: I ended getting the Assassin's Creed pack. I mostly only wanted the first two, but figured I should complete my collection while it's on sale.