He'll father your kid too, for under €90.
No sperm? No problem. The Known Donor Registry, a social networking site for free sperm, connects women with sperm donors who will go on to have some role in their kid's life.
Sperm donation is an easy way to make money, but it'll make you feel judged, ruin your sex life and haunt you with the idea that you could have genetic offspring out there somewhere.