Spotify has launched two new Audiobooks Plus add-on subscriptions that allow Premium users to double their audiobook listening limit to 30 hours. Other users on Premium accounts can now also request 15 hours of audiobook access from their plan manager. However, the new plans are still too short for those who prefer to listen to longer books. I scoured through Spotify’s audiobook listings to find anything I could buy as a Premium subscriber and came up with nothing. In the UK, both Audiobook add-ons are priced at £8.99 (about $12, which could double the $11.99 individual Premium plan pricing in the US).