Asian Cup organisers have warned people from buying game tickets from unofficial sellers who are inflating prices by as much as 700 per cent.

The website www.viagogo.com.au is advertising tickets to Saturday's opening group game at Canberra Stadium between South Korea and Oman, with p

Ticket prices for group games through the official Asian Cup website and from Ticketek range from $15 for category three to $30 for category one.

Category three tickets include those in the lower tier behind the goals.