Apparently it does not work with all USB sticks. When the USB stick is plugged in again, it should be recognised in Explorer. Unfortunately, I can't say anything more about it. Good luck!
Prices can fluctuate constantly, depending on supply and demand.
You can see the price development here:
https://www.digitec-preise.ch/de...
Works for all digitec products, by the way. Simply add "-preise" after digitec in the URL.