DLC for 4000€

[FlawlessHappiness]

However, some of the DLC needs another DLC before you can even use the first.

That's just how it works.

You could argue that if one thing needs another thing to work, it should just be included...
But perhaps there isn't just one thing that requires the main DLC, but 20 things. That's a hell of a DLC suddenly, and we only wanted those first 2 DLCs...

Pick, and choose.