The face value of Taiwan stamps makes them rather expensive in the mainland. A set of four NT $ 20 toys stamps, for instance, would be four or five RMB. If traded at the current "market price" of NT $ 250, that would be an incredible amount of more than RMB50 per set, which the ordinary mainlander could not afford.
台灣郵票的面值對大陸而言偏高，以一套四枚、面值新台幣廿元的童玩小全張而言，換算成人民幣要四、五元；如果依目前市價二百五十元來換算，更是不得了，五十多塊錢人民幣一套郵票，恐怕不是一般人買得起的。