New Delhi, 28 December (NNS): Here, the prices of black pepper markara improved by Rs 10 to Rs 675 per kg due to the strong sale even after the higher prices. During the previous day, the prices have gone up by Rs 15 per kg. The arrivals reported to be negligible in Kochi and the prices held stable at the level of the previous day. The market sentiments may affect because of the new crop. There is no possibility of long uptrend in the prices during the coming days.