I'm from Los Angeles and we have one store like this called Amanu and a pair of custom Italian…read moreleather handmade sandals costs about $395. Here you can find some starting at €85. The family has owned this shop for 3 generations so you know your money is going towards a great little mom and pop shop.
The custom handmade shoes for 15 min is such a wonderful experience and they make sure your shoes are comfortable and are more than willing to work with you and adjust to your comfort. I got a basic black sandal but they don't have this style in America like this! It's been years since I've seen them again. These are better new cause they're made of real Italian leather and will last "a lifetime" and even on the beach according to the shop owner!
I wore these all day walking around Positano and my feet feel better than when I wear regular walking shoes. I think they eventually mold to your feet as well. Highly recommend getting some of these when you're in town.
Full disclosure, I will say there are other shops that so custom sandals too and may do it for cheaper. This just happened to be the one I stopped at first. I had a pleasant experience but I didn't ask about VAT refund or shop around for a better price.