New Delhi, 18 July (NNS): The prices of big cardamom Kainchicut eased by Rs 20 to Rs 1550 per kg owing to the weak offtake even after the feeble prices. Recently, the prices have gone down by Rs 60 per kg. There was no auction of big cardamom from the last one month. The average auction price reported to be at Rs 1250/1812.50 per kg in the last auction which held on 12th June. The spot big cardamom prices will likely to remain sluggish during the coming one or two days.