New Delhi, 01 September (NNS): The prices of big cardamom kainchicut slipped by Rs 30 to Rs 1510 per kg owing to the sluggish buying from the stockists even after the feeble prices. Recently, the prices have gone down by Rs 20 per kg. Its average auction price declined to 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 days.