I have 3 tickets for the Van Gogh Museum valid any time until the end of August (the museum closes for renovation from September). There are always long queues outside the museum so on my recent trip to Amsterdam I bought 3 tickets planning to return to this great city with my kids by the end of the summer. Unfortunately due to unforeseen circumstances the trip had to be cancelled. The tickets are €14 each but I sell them for £30 and will save the buyer precious time for other activities in Amsterdam.