New Delhi, 12 December (NNS): The prices of big cardamom Kainchicut improved by Rs 10 to Rs 1660 per kg owing to the improved sale even after the downfall in the prices. Recently, the prices have gone down in the same ratio. The average auction price reported to be at Rs 1450/1787.50 per kg in the last auction which held during the previous day. The market sentiments may affect because of the another crop. The spot big cardamom prices will not likely to increase during the coming one or two days.