New Delhi, 18 August (NNS): The prices of big cardamom kainchicut gained by Rs 20 to Rs 1540 per kg owing to the limited selling from the stockists even after the feeble prices. Recently, the prices have gone down by Rs 50 per kg. Its average auction price reported to be at Rs 127/1862 per kg in the last auction which held on 14th August, due to this, the market sentiments may affect. There is no fear of downfall in the spot big cardamom prices during the coming days.