New Delhi, 01 April (NNS): The prices of big cardamom remained firm at Rs 1660 per kg owing to the weak offtake even after the uptrend in the prices during the previous days. Recently, the prices have gone up by Rs 10 per kg. The average auction price reduced to Rs 1375/1600 per kg in the last auction which held on 26th March. There is no possibility of more uptrend in the prices during the near future.