Train passengers who buy their fare from a ticket machine, rather than online, face paying more than double, suggests new analysis into prices. Consumer group Which? has found station ticket machines are charging up to 150% more – with the best-value fares often unavailable or very difficult to find. The investigation – which involved sending a team of mystery shoppers to stations across England – found that tickets bought online were cheaper around three quarters of the time. Fifteen researchers tried to find the cheapest single fare for a journey that day, the following morning and in three …