I absolutely sympathize with this sentiment. So to promote some non-amazon source, I tested out the two Delock products that I mentioned in my last post and which can be bought from several non-amazon stores. One can either use the delock.de links above to find sources or price comparison sites like geizhals.at to find them. I bought them at jacob.de.
The 5.5/2.5 mm barrel jack adapter as well as the USB-C cable work just as advertised with my reform and are able to charge it with my 60 W usb-c wall plug.