Maybe an explanation is: CS students usually don't get entry-level jobs that pay more than 50K EUR, often probably less. So maybe they hope that they never have to pay back. Or they don't care and are happy to have a good education after all.
I'm happy for you and the growth and maybe I missed something :)
TUITION OPTIONS - 0 up-front + 10% of salary for four years (£25k GBP / €27.5k EUR maximum total payment)
- £16k GBP or €18k EUR up-front + no income-based repayment
PAYMENT CAP £25k GBP / €27.5k EUR maximum
The five year payment window clock starts on graduation. So if you don’t get a qualifying job within 5 years of finishing class, you pay nothing.
EDIT: Not sure if you were referring to US or EU, since you mixed around the $ and € sign a little!
You should tell that to our rapidly growing number of German and European students :)