 £522.89 at the 5-star Carlton Hotel in Osaka, Japan; £1,147.95 at John Lewis; £3,346 at Searcy&#039;s, which has several champagne bars across London; £624.88 in a store specialising in bar equipment and bottle openers; £1,382 at the Hotel Melia in Berlin, &#039;one of the best in Germany&#039;; £788 at the Miramar luxury hotel and spa in Santa Monica, California; £542.68 in a store which rents out drills, shredders and other tools