She added that around 22,500 tickets were sold in 20 minutes on Wednesday, and that the capacity for the event was likely to be about 60,000. More tickets may go on sale at a later date via the concert’s Web site www.concertfordiana.com.
The face value of tickets is 45 pounds ($89) each, although they attracted bids of up to 500 pounds each on the online auction site www.ebay.co.uk early on Wednesday.
source