600€ for an obsolete-era machine that sells imperfection as a "feature" (probably because they don't have anything else to sell, as even their website's sample photos are mediocre quality) that many will probably use once or twice and get bored and jump back to their iPhone/DSLR/mirrorless anyway? No thanks.
This isn't my experience. I know a lot of people with the fujifilm instax (which is admittedly much cheaper) and people use it quite a lot
I doubt with this price tag they can sell enough to offset R&D and marketing costs.