The Global Blueberry Price Index, which gathers data from 14 large-scale retail chains, has reported a 0.6% decrease in blueberry prices compared to the previous week. The number of blueberry references in these retail chains has dropped by 4% from the previous week, with the average number of references per chain being 4.1. The article also mentions that the current week's basket assortment includes 49 references, with the prices and availability of blueberries varying by brand and size weight.