Greetings.

This is my first post and it comes at a time when I am moving from Switzerland to Germany.

I got a quote from a mover/packer company indicating a price of 2500 CHF for a 3 meter cube container from Geneva to Aachen. This includes packing, unpacking and other charges.

Is this a reasonable price to pay. Do you have any suggestions (e.g. names of the companies that you had good experience with), please let me know.

Thank you very much in advance.

Welcome and bon voyage! It sounds fairly reasonable to me, based on what we paid, which was CHF 8k for similar service from Metz (near Nancy) to Zug.
Good luck anyway!