If you have just one day in Beijing ,it does not matter, here i have a one day tour itinerary.          1.Tiananmen Square         2.Forbidden City         3.Summer Palace          4.Hutong tour         5. Houhai bar street.         6. Wangfujing food street. or        1. The Mutianyu Great Wall         2, Visit the water cube and bird's nest in Olympic stadium         3, Kungfu show.         4. Wangfujing food street. We can make some changes according to your interest. As to the price, if you are alone, 40USD for one day, if you are a family, more than two people, less than four, then 45 USD for one day. Actually, money will never be the most important thing, if you trust me, i can do better. Wish you have a memorable trip in Beijing.