New Delhi, 04 June (NNS): The prices of black pepper markara held firm at Rs 685 per kg due to the sluggish sale at the higher level. Recently, the prices have gone up by Rs 15 per kg. Presently, the monsoon season has already been arrived, there, the rainfall reported to be regular, due to this, the market sentiments may affect. The spot black pepper prices will likely to remain stable during the coming days.