New Delhi, 13 June (NNS): The prices of big cardamom Kainchicut held firm at Rs 1620 per kg owing to the sluggish sale even after the feeble prices. Recently, the prices have gone down by Rs 30 per kg. Its average auction price rose to Rs 1250/1812.50 per kg in the last auction which held during the previous day. There is no fear of downfall in the spot big cardamom prices during the coming days.