I have a degree that I don't use at all, but I'm still glad I went because of all that it taught me. It expanded my mind and helped me become a better citizen. I learned critical thinking and was forced to grapple with challenging ideas. I also met some cool people whom I had awesome adventures with. You can't attach a dollar value to that, and it would be nonsensical to even try. This is one of the reasons why I think that college education should be free. It makes better citizens.
You sure sound like someone from the marketing department of a university. Making college "free" would need a heck of a lot of other changes to go along with it, or we will only have even more educated idiots than we do now.
I think we have different ideas of what "no cost" means, unless I'm incorrect and that university professors and support staff in Europe are volunteers.