By Silvia Aloisi and Mimosa Spencer PARIS (Reuters) -Chanel could replicate purchase limits on its quilted Classic Flap handbag on other high-end products and in more countries, the French brand told Reuters, as luxury houses tighten their grip on distribution amid soaring demand. “We have sometimes to limit the number of items a single client can buy,” Chanel’s chief financial officer Philippe Blondiaux said in an interview, when asked about a report on the Pursebop website that it would only allow shoppers to buy two Classic Flaps per year – which can cost $10,000 each. Blondiaux said the li…