Based on my research after seeing it pop up on Woot, Amazon's returned-products division: https://home.woot.com/offers/robin-hood-sheriff-of-nottingham-game-6

Another entry on Amazon shows that it's running out (like it said "last one" or something), and prices across different retailers are strongly trending <$15 whereas on eBay it's still >$20, so it seems like they're trying to get rid of it. I feel mixed about this because it's a solid 7.0★, 1.66🧠 on BGG and I haven't played it yet. Then again, I know someone who owns it so I could just ask to eventually play it...