New Delhi, 02 July (NNS): Here, the prices of black pepper markara remained firm at Rs 760 per kg due to the sluggish trading activities. Recently, the prices have gone down by Rs 10 per kg. Both the arrivals and the prices held stable at the same level of the previous day in Kochi. The market sentiments may affect because of the stock of Sri Lanka. The spot black pepper prices will likely to remain sluggish during the coming days.