Transports regularly pursue indistinguishable courses from the trains, yet for substantially less. Once I took a transport from Granada to Madrid. It took five hours and cost €17 ($22). A similar voyage via train took four hours and cost €70 ($91). Wow! That is an extraordinary precedent, however the facts demonstrate that transports are all around less expensive than trains.
I've discovered that there isn't as much English language data about transports effectively accessible on the web. You can go to the Eurolines site, which covers numerous nations, or simply Google "transport Amsterdam to Munich"; as a last resort, ask at your inn or the transport station.
Cheerful Traveling! Be protected. Continue voyaging and make your heart gleam sparkly and crisp with the magnificence of nature!