New Delhi, 16 June (NNS): The prices of big cardamom Kainchicut declined by Rs 40to Rs 1520 per kg owing to the weak buying from the stockists even after the feeble prices. Recently, the prices have gone down by Rs 10/15 per kg. Its average auction price improved to Rs 1250/1812.50 per kg in the last auction which held on 12th May, due to this, the market sentiments may affect. There is no possibility of long uptrend in the prices during the coming one or two days.