Been using it for the last two years and it’s been great so far. Not sure if sub price would be justified for other people but for me the cheapest paid tier covers basically everything I need from a reader.
I pay for Inoreader as it most closely matches the Google Reader social experience for me. You can follow other users, share articles to your feed for other users to discover and comment back and forth. I always said I would have paid Google to keep Reader going, so I put my money where my mouth was with Inoreader. I do find it’s search capabilities somewhat lacking tho. Mobile app is decent, desktop website is great.