If you start an account and invest 500€ in total you get 5€, if you invest 1000€ in total you get 10€ and if you somehow manage to invest 10.000€ in total you will get 100€ in total (with steps between: 2k = 15€, 5K = 30€, 10K = 40€)
You will get 15€ in a random Stock (for example "Apple") if you start to invest your Money in the first 21 days after opening your account. After opening you can sent me your Email and I will send you 5€ in Rheinmetal ;)