New Delhi, 27 March (NNS): The prices of big cardamom Jhundiwali improved by Rs 10 to Rs 1455 per kg because of the strong sale even after the higher prices. During the previous day, the prices have gone up by Rs 30/40 per kg. The average auction price rose to Rs 1150/1600 per kg in the last auction which held on 21 March, due to this, the market sentiments may affect. There is no possibility of more down trend in the prices during the near future.