@comm one
Try to get more quotes for ppl in Germany. Your assumption of 15 000 Euros is way too high. You will find relevant discussions at pilotenboard.de or may be also at pilots.de. "eazy" has posted certain tricks and traps how flight schools try to hide the full costs but which you have to take into account, also for comparing offers.
Around DUS, there are many more schools than just two,
afaik.