Viagogo is the official ticket seller for the Hong Kong Rugby Sevens. Trusting that the link from the official website HKRugby website would have me buy tickets at the official price, I went ahead and paid the "best price" "best deal" "Hottest Ticket" "Selling fast" crap price of HK$4114 for the three day ticket in September 2018. The same three day ticket is currently (March 2019 - one month from the event) for sale on viagogo for HK$2450! What can I say: don't ever buy anything from viagogo, even if it's your only choice, and supposedly official.