New Delhi, 25 November (NNS): Both the availability and arrivals of black pepper reported to be weak in Kochi, due to this reason, here, its prices gained by Rs 10 per kg. The prices of black pepper remained stable at Rs 725 per kg due to the weak buying from the stockists even after the feeble prices. Recently, the prices have gone down by Rs 10 per kg. There is no fear of downfall in the spot black pepper prices during the coming days.