I’m not sure when these were released, though I do kind of want to collect all of them now I know they exist. I found three of the Funko Mystery Minis from the Harry Potter collection on eBay, though as I knew which they were these aren’t exactly mysteries. I think that in the UK these are only available online, with the prices ranging from £4.99 to £12.99 as a mystery, unopened box and the different characters have different prices depending on the rarity.
Maybe it’s just me but there seem to have been a lot of different Funko Mini Mystery box series released, a large amount seem to be from various TV series and a lot of Disney characters. I might have to get a few of those some time in the future.