Will probably be the adapter supplied.
Primus has different versions of the same cooker for different countries/regions. For example, a different adapter is included for the Nordic countries, etc. But it takes some research on the manufacturer's website to find out what is included where and then to find it on Galaxus:
https://primusequipment.com/de...
However, if the manufacturer number 350120 is correct for the "Piezo", then no adapter would be included here. The other one has a manufacturer number that I can't identify. Maybe it's the one from Bergfreunde.ch...
The price (differences) at Galaxus/Digitec are not very meaningful, as they are usually calculated automatically and due to different prices in the selection of suppliers, a "better" model can sometimes be cheaper.

I think two different models are incorrectly listed on Digitec. On the Primus homepage there is only the one Tupike (always with piezo ignition). The cheaper, black Kinjia model, on the other hand, does not have piezo ignition.
Greetings

Hello, as far as I'm concerned these are the same products, I haven't seen any difference between the two.