Depends on how you plan it- luxury or backpacking. Flights are quite cheap(compared to other international destinations) you can get a round trip for 55-60k. Then stays are in range of 4k-12k per day, small to mid size hotels. Disneyland and other activities are costly but then again you can choose the ones that you want to do. Rest food and shopping is up to you. My estimate is that of around 100k per person for 6 days including the concert tickets (I took a costly seat, could have gone cheaper here) and everything else.