New Delhi: Sugar prices tumbled Rs 45 per quintal in the wholesale market on Friday. Marketmen said huge stocks position on a steady flow of arrivals from mills along with limited offtake by stockists and bulk consumers due to approaching month-end led to the fall in prices. Sugar ready M-30 and S-30 prices dropped by Rs 20 each to Rs 3,430-3,630 and Rs 3,420-3,620 per quintal.