Do what? the base SoSE game on sale?!

Now I suppose its not really my place to question your guys marketing strategy but I'm a tad perplexed as to why the original/base Sins of a Solar Empire is on sale for $10. Seeing as how trinity is out now with the base game and expansions all in one and well the fact that if someone is going to be buying the base game they dont have the expansions. Why arn't you guys just offering trinity version for $30? As it stands atm if someone buys trinity they would be paying $10 more than if they bought the original and then each individual expansion separately...