I'm in.
Last game I bought full price was Diablo III. I cannot say that it was worthwhile because I did not find sufficient time to play it when having so many games on GOG.
In the 90's I have bought many retail games on full price: Command & Conquer, Red Alert, Tiberian Sun, Warcraft 2, Falcon 4.0, The Dig, Syndicate Wars, Wing Commander IV, Wing Commander Prophecy, Top Gun, The Ripper, Baldur's Gate...
Diablo, Starcraft II, Diablo II, Starcraft, Warcraft III and their add-ons I purchased when their prices were somewhat diminished, but still for a price much higher than most games I have purchased on GOG.
All of them were great and worthwhile.
Most expensive game I purchased on GOG was Witcher II - it cost me 30$ on discount, which is still more than a full price of many indie games.
Post edited December 04, 2015 by Jakov