There are some deals on GamersGate which are not featured on the start page as 'special deal' (or are they always discounted?):
Sometimes such games are mispriced (there was a Sanctum Collection for 80% off in certain countries that later turned out to be a misprice), sometimes the discount is just that a bundle is sold cheaper than the sum of the games it contains (will be shown as a discount, but not added to the list of current sales), and sometimes the game isn't actually discounted at all.
The latter is a bit annoying. An example is Astroslugs, which is actually a pretty good casual puzzle game. It's sold for about 3$, and that's the same price it had elsewhere (last time I checked). But on GG, the publishers have given it a fantasy list price of 10$, so it's displayed with a discount of 70%. Basically, some publishers use the fact that they can set the current price and the list price independently to create an illusion of a huge discount when there actually is none.
Hunting for hidden discounts in GamersGate's vast catalog _can_ be very rewarding (I made some great purchases this way), but I'd recommend to check before you buy. :)
Edit: Also, please note that your price for Morrowind is _only_ valid in Germany. For whichever reason, Bethesda sells some of its games cheaper in Germany than anywhere else. Being German myself I won't complain, but it's probably worth mentioning. ;)