Warning to all potential users of the viagogo website. I purchased 2 tickets to the U2 London Joshua Tree a2017 tour concert in February. I paid 430 pounds for the two tickets, only to find out that the face value of the tickets upon arriving was 40 pounds each. I thus strongly advise everybody to avoid the viagogo website at all costs, as the prices there are a scam on the buyers. Viagogo intentionally tries to deceive you into buying tickets far above their face value, making it seem that they are no longer available elsewhere. Make sure to check the prices elsewhere.