You would expect the candidate to spend 60€ to try out a niche product? If I were in the position I would definitely expect them to research the product and understand how it works (I did), but not to spend that kind of money to use it.
I mean if it was after I started the job that would make sense. You have to know the product you’re working on.
But it seems like a power asymmetry that they have dedicated 1 hour of their time to the interview and I am expected to spend money and more research time, in addition to all the usual interview preparation.
I’ve updated the description to mention that this is definitely not a scam, more like weird and unreasonable behavior.
Exactly, this is a good analogy. I actually got the feedback that I was technically qualified and most of the other feedback was positive.