Yea, that can be really annoying. First time I bought from an international shop PNC locked my account for "security reasons", sigh...however they luckily stopped doing that afterwards.
However in this case you should be good to go: "ShinyLoot is a web based digital distributor of DRM-free and minimal DRM PC, Mac, and Linux games, based out of Austin, TX."

Kentucky Route Zero is 50% off in the Humble Store for $12.49

Natural Selection 2 is on sale for $2.49, its Deluxe Edition is on sale for $3.99, its Deluxe Edition Upgrade is on sale for $1.49, and its 4-Pack is on sale for $7.49 for the next five hours on Steam.

The Tomb Raider Collection is $13.99 on Steam for the next thirteen hours.
Each game can be bought individually for the next thirteen hours at $9.99 for Tomb Raider; $1.39 for Tomb Raider I, Tomb Raider II, Tomb Raider III, Tomb Raider IV: The Last Revelation, Tomb Raider V: Chronicles, Tomb Raider VI: The Angel of Darkness, and Tomb Raider: Legend; $1.79 for Tomb Raider: Anniversary and Tomb Raider: Underworld.

Lara Croft and the Guardian of Light can be bought by itself for $1.99 for the next thirteen hours.

Tell your friends.
And when it's over, tell your enemies.

The Tomb Raider Collection is cheaper on Greenmangaming at $11.49 (and even cheaper, ~9.19 with the 20% off voucher code TAREM-4PLAY-VOUCH).

http://www.greenmangaming.com/s/us/en/pc/games/action/tomb-raider-collection/

Nice.
Fix the url you inserted... to the url you provided. It's missing a "/" at the end of it.

AndShadow Warrior 2013 is $10 on the HUmble right now, too

and Gunpoint is $3.39

Wholeheartedly recommend this. Wrote some brief thoughts on the game in the Gunpoint thread. It was pretty awesome, I think.

Just as a personal note about preconception on this, specifically:
I was never turned on by Mark of the Ninja but got it practically for free in a a bundle, so i came finally around to play it. I instantly loved the game mechanics esp. being non-violent and now even getting the DLC for it. (The excessive amount of violence is still off-putting, another incentive to go non-violent.)

Now with Gunpoint I was immediately hooked by the art style and the concept. Now I tried the demo. I instanly hated the controls, the game mechanics and the tiny assets, when you see them actually at work.
Not bashing the game or anything, just funny how you can lead yourself astray, with expectations.

:)

Thanks, but I already have an account :) and some credits... still I have like 300 games I've yet to play :/

http://www.amazon.com/Assassins-Creed-Black-Flag-Online/dp/B00BPEBG76/
AC4 29.99 live now

Both Uplay and Steam versions 29.99

I think the GMG version doesn't has the new Tomb Raider, while the steam one does. But 14 euros right now for me is too much.

http://www.gamersgate.com/DD-KPP1EDE/knights-of-pen-and-paper-1-deluxe-edition
GamersGate: Knights of Pen and Paper +1 Deluxe Edition(Steam) $1.88

I think this is a mistake. "List Price $3.75"

(edit) They fixed.

I hope so, I bought the game some hours ago for that price. I think they didn't change the game price from the previous sale and the discount got stacked.

Either way that game is pretty much designed to have you spend some more money when you're playing it.

Edit: Nevermind, corrected. Thanks guys. Picked up the Tomb Raider set myself.