Cusco is still less touristy than any city in Western Europe and expensive? Not really.. The entrance fee to Machu Picchu is quite steep and if you want to take the tourist train (I took a cheap bus instead and walked along the train tracks) you have to pay as well, but apart from that, you can avoid the tourist prices. Even in aguas calientes, the extremely touristic village that is the starting point for every tourist visiting Machu Picchu, I found some cheap and good local eats. Machu Picchu does receive a lot of tourism, but it is far less bad than I expected since the tourists spread over the huge area, and the place is actually really impressive!