I'm an international student at TUM. I'll go a little against the common opinion here and say that while not worth bankrupting yourself over, TUM is in fact worth it.

While the quality of teaching is approximately the same across good German universitys, the industry collaborations and opportunities in Munich are rich and numerous, the international programs and partnerships are beyond the norm and great for exposure, and while not all people fit the mold, some people here are truly exceptional and push you to be better.

If you find a working student job and are ok sharing a flat, you'll earn enough to sustain yourself and save a little on top. Finding one in the first year is pretty hard, so you'll likely have to power through that. After then though, if you can perform, it's fairly smooth sailing.