New Delhi, 11 June (NNS): Dry ginger prices remained firm at Rs 30500 per quintal owing to the strong trend after the ongoing summer season. Recently, the prices have gone up  by Rs 500 per quintal. Both the arrivals and the prices held stable at the same level of the previous day in Kochi. The market sentiments may affect owing to the normal supply and availability than the normal level. The spot pistachio prices will likely to remain strong during the coming one or two days.