Wholesale price-based inflation (WPI) eased in September to 10.70 per cent from a year ago, compared to 12.41 per cent in August, government data showed on Friday. The Wholesale Price Index-based inflation was 12.41 per cent in August and 11.80 per cent in September last year. This year, the Wholesale Price Index (WPI) touched a record high of 15.88 per cent in May. September is the 18th consecutive month of double-digit WPI inflation.