Sainsbury's is rounding off its month of fresh produce savings with one final weekend of half-price Nectar Prices on basket staple fruits.Running from Thursday 17 to Sunday 20, the promotion covers popular picks that are all 50 per cent off for Nectar members.It's the fourth in a series of weekend deals the supermarket has been running throughout September, designed to help shoppers keep costs down on healthy staples as families settle back into…