Onion, tomato and potato prices follow distinct seasonal patterns, with harvest cycles, weather disruptions and storage constraints influencing wholesale price movements. Tomato prices have surged nearly 50% over the past 10–15 days as supplies tightened following heavy rainfall in. Tomato price rise: Tomato woes are back, with the staple now retailing at an average price of Rs 70-80 per kg, compared to the earlier Rs 30-35 per kg, in several parts of.