It's a tourist shop, all over the country. The tour guide will take shopping with him, and then the tour guide will get a commission. It's the same everywhere. There are similar stores all over the country. It shouldn't be called cheating, but the price of things is slightly higher than usual. Go out, travel just for fun, buy if you like, and buy if you don't like.
I only read classics when traveling, and I can buy them everywhere, so I will never buy them.