I have a feeling not many people buy satnavs in 2023.

It was a reference to bygone days, but the practice wasn't that uncommon in certain Western countries...

Many...if your on a mountain and your touchscreen is literately frozen you wish you have a other one...also if you have to trust in a technology you better have 2 devices or a additional map and a compass.

I heard people do this with expensive cameras and equipment. Instead of renting, they can buy one for a vacation, then return it when they get back home.

Switzerland didn't have the kind of return anything for any reason culture as the US has had for a long time. The fact you can return a non defective item is something newer and you still find retailers that will not take your item back unless it is defective.

So you don't see people to go Jumbo (home depot equivalent) buy a tool and return it a week later after the job is done to get a full refund.

In fact even digitec/galaxus will charge you a 10% restocking fee if you opened the item and it isn't not defective in anyway.