The Sorcerer's Stone came out in Swedish in 1999 when I was 10, the same year I began learning English in school. My parents have the books in English and Swedish in their bookcases from Harry Potter and the Order of the Phoenix going forward because I couldn't wait for the translations, but then I re-read them when the Swedish edition arrived (since my comprehension was honestly not that great), before allowing my siblings to read them. I have friends from back then then that I doubt has read any other books since then that weren't assignments. Can't really blame them. I don't know if they're available as audiobooks, but if they are, The Emigrants by Vilhelm Moberg is 1780 pages between the four of them, all of them really good.
They're available as eBooks. I've added them to the list. I really enjoyed the Millennium Trilogy the first time through. The second time I realized that Anita Blomqvist is not a hero and that kinda tweaked me a bit. I'd love some exposure to something better. Thanks.