I dunno about Sweden but at least in America it’s extremely unlikely that you would be prosecuted for simply purchasing 1 unit. That seller on the other hand, he may be in for a bad time. The youtuber is an edge case wherein they popularized the availability of a source

either way fuck that, illegally download and even buy roms

also fwiw all the ambernic stuff is sold on aliexpress. Cut out the middleman and save cash. I’m pretty sure aliexpress ships to Sweden. A lot of them come preloaded tho fyi with Roms and bios for every console supported, which is why it’s absolutely insane they’re going after him and not ambernic