New Delhi, 25 November (NNS): Here, the prices of black pepper remained firm at Rs 725 per kg owing to the sluggish offtake even after the feeble prices. Recently, the prices have gone down by Rs 10 per kg. On the other hand, its prices and the arrivals remained stable at the same level of the previous level in Kochi. There is no fear of downfall in the spot black pepper prices during the coming days.