When I went to New York, several years ago, I was more than a little excited to visit Chinatown. Can you imagine? A trip to the local Chinese supermarket in Bristol has me skipping like a child, so a whole NY district full of the most amazing shops was enough to give me heart palpitations! If I'd had the money, I would have bought SO MUCH STUFF. As it was, I had to limit myself to the portable and affordable.
And since you ask -no, I have never been tempted to use them.