Rice basmati prices fell further by up to Rs 200 per quintal at the wholesale grains market today owing to fall in demand against adequate stocks position. In the national capital, rice basmati common and Pusa 1121 variety slipped to Rs 6,600-6,800 and Rs 5,500-5,800 from previous levels of Rs 6,800-7,000 and Rs 5,600-5,900 per quintal, respectively.