New Delhi, 22 July (NNS): The prices of big cardamom kainchicut improved by Rs 10 to Rs 1700 per kg because of the improved sale even after the uptrend in the prices during the previous days. Recently, the prices have gone up by Rs 20 per kg. The average auction price reported to be at Rs 1350/1762 per kg in the last auction which held on 16th July, due to this, the market sentiments may affect. There is no possibility of uptrend in the spot big cardamom prices during the coming days.