New Delhi, 10 September (NNS): The prices of big cardamom Kainchicut improved by Rs 10 to Rs 1480 per kg owing to the improved sale even after the higher prices. Recently, the prices have gone up by Rs 20 per kg. The average auction price reported to be at Rs 1250/1725 per kg in the last auction which held on 28th August. The market sentiments may affect due to the new crop. There is no possibility of long uptrend in the spot big cardamom prices during the coming one or two days.