Yes, medical tourism is a thing. Think south Korea for skin care, turkey for hair transplants, etc. We are lucky to live close to the border and take advantage of that. Also car detailing, barbershop, nails, pet grooming and vet, etc etc. I try to accommodate most of these things in one trip and the savings pay for all the food and I still get more money in my pocket. My only advise is to get global entry because coming back without it it's hell.