The ordering process and payment were simple and smooth.
The delivery from China to Switzerland took 18 days. 16 days the package traveled around China, then one day for the flight from Shenzhen Hong Kong to Zurich, from where it was delivered to my mailbox the next day.
The delicate product was only packed in a padded envelope instead of a sturdy cardboard box, or something like that, which is why it was partially bent. Whether it works, I do not know yet, because I sold the RC excavator in the meantime. The new owner will test the functionality.