It's slicker than most and it allows others to save their points for these instead of NOT knowing and blowing them on something else.
There are deals on this board that save you 1.50. I'm pretty sure saving $10 is a deal.
Ignoring the fact that this isn't even a possible deal until the start of mid-febuary and complete-able before weeks afterwards, it simply isn't that great. You get 2/3 off your last game if you buy them all. Yeah, if you were planning on buying all four on release you save 15-20% off the package. But take for example last year's "House Party", one game Torchlight dropped 800 points on a sale within a year. I'm fairly certain I've seen Hard Corps Uprising on a similar sale, and am certain for Beyond Good & Evil HD.