New Delhi, 21 November (NNS): Here, the prices of black pepper remained stable at Rs 645 per kg due to the sluggish trading activities during the last some days. Recently, the prices have gone down by Rs 10 per kg. In Kochi, the arrivals reported to be negligible and the prices held stable at the same level of the previous day. There is still one and a half month left in the arrival of the new crop. Therefore, the spot black pepper prices will likely to remain sluggish during the near future.