te_lanus: Sometimes one wonder about steam sales, what either steam or the Dev/publisher was smoking when they make it up.
Case to prove it:
Crysis Collection is on sale this weekend. The Collection is a "cheap" $19.99 USD yet buying them individually you end up with a whopping $17.47 USD.
I have seen those "sales" many times on Steam where buying the game individually is cheaper than the full collection. One of those is the GTA Trilogy or The Book Of Unwritten Tales Collection. You can save from cents, up to a couple of dollars, and the funny thing is, these sales repeat after a while with the same prices, Steam doesn't fix them, and people still buy them (the collections appear in the top of the sales...) :P