4.99 GBP = 7.96882 USD

UK and EU usually get screwed on games prices anyway.
Steam usually does a 1on1 price conversion on USD to Euro (ie a 40usd game in US is sold 40euro in EU, which is equivalent to 55 something usd) which is even worse...

Part of the reason I am buying in USD in steam really, even with conversion rate it's still cheaper

No, no need to connect to anything when playing.

GG system works like this:

- You buy your game
- It will be added to "My Games" panel in the website
- From there you download a downloader small file that will the one that will download the game itself
- You run this downloader thing, let it download the whole game
- Once the download is finished it will start the installation of the game, like for a game you install from CD
- TADAaaa you can play the game without being connected anymore to internet.

GG has no client or something like Steam that you need to run to play the games

Yes I consider GG to be more a "Download official ISOs legally" service where what you download is equivalent to the retail CDs, coming with the same DRM etc.

Still some people prefer the "no client" thing while other prefer Steam.

Personally I just go where prices are cheaper or sales better ^^

And yes, hopefully something good for midweek sale to compensate for last weekend =P