NFS - Shift, NSF: Undercover, Shift 2 - Unleashed, Alice: Madenss Returns The Complete Collection and Syndicate use Origin.
Dead Island is a Steamworks game, so you'll get a Steam key for that one too.

Also on Tony's CAG list:

12/21-12/23:
Kingdoms of Amalur Complete Bundle: $11.99 - Origin

Crysis: $4.99
Crysis Maximum: $7.49
Crysis 2 Maximum: $9.99 - Origin

Crysis Maximum Maximum Pack: $14.99 contains:
1. Crysis Maximum
2. Crysis 2 Maximum - Origin

Is Airline Tycoon Deluxe worth playing? It's on sale in Gala Store

If you like that sort of game it is hard to go wrong for $1. I don't, but Edna & Harvey: The Breakout is suppose to be good. I'm still deciding if I should just get those two, or add an extra $3 to get the full Whispered Cargo Bundle. Cargo! The Quest For Gravity didn't interest me at all when I looked at it originally, but a couple comments here have me wondering if I should give it a shot. The Whispered World looks ok, but I don't know if it is worth $3 by itself. I checked a let's play and some of the design and UI functions seem poorly done; on the plus side, I didn't find the main character's voice nearly as bad as a couple reviews claimed. I'll have to decide tonight, though, since there is less than 8 hours left.

Holy fuck...Recruits and I Shall Remain for sure!

As some others and I have posted before, Cargo is a real unique game, more of an experience than a game but fun and really imaginative. Form the picture it really does not look like much but playing is different thing. For me it would be worth $3 alone. But it also not everybodys taste for sure.
As you said Wispered World GUI is really poor and puzzles also and a lot of people are put off by the voice. The story can be interesting though (I've heard)
But Edna for $1 is a definitive no-brainer!

The Shogun 2 games are also 66% on Amazon. Make sure you buy the "collection" as it is only a dollar more but contains most DLC.

Edit: Discount corrected.

I see -66% only. Maybe I am in a wrong link?

Well, It's obviously because of the dedicated fanbase and several factors. :)
This version has all the goodies from the Pre-Order version.
(Though the dresses can also be activated with the normal version)
Then The 1st Alice hardcopy prices skyrocketed on ebay, an has not been otherwise legally available. Back then it in 2000 something this was even acknowledged from the official Lewis Caroll society as being 'true to the book's vibe and character'.
On top of it this was among the more imaginative titels of that time, though sometimes rather crudely executed and at time even flawed design choices (IMHO).
Now the rerelease is supposed to have updated hirestextures, making the game look better, while maintaing the great gameplay that made it great.

my 2 cents for the 'why', anything I forgot? :)

Oops, my bad. It is only 66%. It's ten bucks, so I thought it's 75% off. Apparently they reduced the base price at some point.

3 Far Cry games for around 8$
http://impulsedriven.com/products/ESD-IMP-W2385

That can't be right... It claims that Far Cry 3 is a part of the bundle.

$68.98 from Canada.
Since you are in China, I think what you see is a regional price.
but it is still quite unbelievable even it is a HK or Chinese pricing
(If my memory is correct, they list the price with HK dollar)

In UK it is showing FarCry 1, 2 & 3 for £4.94
Unfortunately, it also includes Tages (at no extra cost...)

I see 6,59€ in Germany. Grab it while it's hot, I guess ;-)
Unfortunately, it is GameStop...

€7...

Yeah that doesn't seem right somehow, lol.