REPORT THIS MONTH LAST MONTH DIFFERENCE   South Dakota 30.80 34.80 -4.00 SOUTH DAKOTA 10 MONTHS 27 MONTHS THIS YEAR Average 31.86 31.01 33.48 High 40.30 47.30 42.00 Low 22.60 17.60 22.60 Data provided by iNet Solutions Group, Inc. All commodity prices delayed 10 minutes.