I lost my sunglasses a few days ago (cheap ones) and have been trying to find sunglasses to buy ever since. In the US, seems every corner Walgreens and CVS has a rack of them. Not here. In Fukuoka on the island of Kyushu, in Japan. Sunglasses = yakuza (the evil Japanese crime syndicate so not commonly found.

We found a glasses place in the megaplex train station. If I’d wanted to pay $180, I’d have been set.
Today, I scored. We took a little jaunt to Dazaifu and boom, in a tiny shop way at the back, a rack of sunglasses.
