Nordex already has fantasy for higher prices. I would increase times by about € 5,000 and thus equalize the minus. You could also buy several tranches spread over the year, but just with the aim to shoot up significantly.
@theboersianer well, I would never have invested such a mini-amount. That's pointless...... 50% plus or minus is really insignificant with a stake of €500. Therefore just start with a reasonable amount. Eventually you'll figure it out.