It depends upon the number of days you are traveling for. You have to include everything from accommodation, sightseeing, food, public transportation and so on to get an estimate. If you are traveling for 2 weeks, then it might cost around $6,670. If you want to explore the entire Europe, then you are suggested to go for a month tour. Again, you will have to keep in mind all the aspects. For a month tour, the cost would be € 8799 to € 9000.