Check out Arcane Tinmen's sleeves. They also produce Dragonshield sleeves for standard size playing cards and card games, think Flesh and Blood and Magic the Gathering, but they also have an assortment of sizes for boardgames and non-standard size card games that would likely run you cheaper than Dragonshield.. Afaik, they're from the Netherlands, can't comment on where the sleeves are produced, though, possibly China too.
Another option would be Katana sleeves by Ultimate Guard. They're a little cheaper than Dragonshield, have nice quality and shuffle feel (from what I've heard), and Ultimate Guard is from Germany. Again, can't comment on where they are produced, but I imagine most sleeves are probably made in China.