New Delhi, 18 June (NNS): The prices of big cardamom Kainchicut held firm at Rs 1510 per kg owing to the sluggish offtake even after the feeble prices. Recently, the prices have gone down by Rs 20 per kg. Its average auction price rose to Rs 1250/1812.50 per kg in the last auction which held on 12th June. There is no possibility of more uptrend in the spot big cardamom prices during the coming days.