It’s the hottest ticket in town — and then some. Six Nations clashes between England and Wales are rich in history, rarely short of drama, and ever-popular with fans, but if you haven’t already got a ticket for Saturday’s game it’s going to cost you. While tickets for the contest at London’s Twickenham stadium are officially sold out on the England Rugby website, there has been a surge in demand this week with prices soaring on resale sites.  A seat at Twickenham Stadium is costing as much $2,430 (£1,750) on one resale site — StubHub — with many tickets available in the region of $500 to $850. Ticket prices originally ranged from $57 to $224, according to England’s Rugby Football Union.