New Delhi, 01 June (NNS): The prices of big cardamom kainchicut improved by Rs 10 to Rs 1560 per kg owing to the limited buying from the stockists even after the downfall in the prices during the previous days. Recently, the prices have gone down in the same ratio. The average auction prices reported to be at Rs 1350/1600 per kg in the last auction which held on 28th May, due to this, the market sentiments may affect. The spot big cardamom prices will likely to remain sluggish during the coming days.