New Delhi, 07 September (NNS): The prices of big cardamom kainchicut dropped down by Rs 170 to Rs 1510 per kg due to the heavy selling from the stockists at the higher level. Recently, the prices have gone up by Rs 20 per kg. The average auction price reported to be at Rs 1400/1675 per kg in the last auction which held on 20^thAugust. The market sentiments may affect because of the arrivals of the new crop. There is no possibility of downfall in the prices during the coming days.