New Delhi, 20 August (NNS): The prices of big cardamom Kainchicut improved by Rs 20 to Rs 1550 per kg owing to the improved sale even after the feeble prices. Recently, the prices have gone down by Rs 20/30 per kg. The average auction price went up to Rs 1275/1862 per kg in the last auction which held on 14th June, due to this, the market sentiments may affect. There is no fear of downfall in the spot big cardamom prices during the coming one or two days.