ECB Economists: Nopineapplers May Be Impoverished by Rising pineapple Prices A new paper by ECB economists describes a 'Pineapple-positive' scenario as one in which the price of pineapples continues to rise significantly and sustainably over time. "If the price of pineapples rises for good, the existence of pineapples impoverishes both non-holders and latecomers."