To be honest I don't know the school but just to comment to a couple of points made above.
- Prospects for MBAs in Germany seem to be good from the experience I have had so far, either by being here or by helping filter people here... I highly recommend doing one in general
- On the other hand, you are very young and the experience you will get from an MBA at this age will be less compared to waiting for 2-3 more years
- I disagree that the first thing an employer looks is your education

... depends on the job you are applying for and of course the personality of the employer. An MBA will draw attention and perhaps give you an interview opportunity easier than somebody else but that's it imho.
- With regards to the quality of the school, it's certainly not top10 in Europe as it doesn't rank amongst the top ones... you can easily check that in the links provided. However, rankings are not everything in an MBA. Talk with a few alumnis as Psmith suggested (not just one - alumnis tend to not be so objective about their school) and ask them as much as possible about environment, teamwork, support from school boosting projects, teaching methodologies. After lots of questions you get a feeling about how satisfactory the environment is and whether you want to be part of this.
- Salary levels are not dependent just on an MBA obviously but on the rest of the experience as well that allows you to apply for different positions. Obviously a 35 y.o MBA that may go for a sr. manager or director position will be looking at different salaries than a 24-25 y.o high potential who is just barely starting careers. Depending on industry and experience I would say you would be looking at 45k approx. as a starting point at the age of 25 on a local contract. Of course that can go up fast afterwards.
- At last as jackal accurately pointed out "if that is the main AIM", make sure you prioritize the right things. Big money is not everything so early in your career. You have several years in front of you before becoming rich
My recommendation is that you wait a bit longer... your post shows that you are not entirely sure about what you want to do and for what reasons. No need to take rushed decisions mate. An MBA can be the time of your life... once in a lifetime opportunity. You wouldn't want to mess it up
Apostolis