Thank you for visiting Protein Sources Milling, LLC. Click on the cash bids tab for prices. Corn prices are based delivered to our mill, delivery hours are 8:00 am to 4:30 pm Monday thru Friday. Beans are priced picked up and delivered to Mankato. For added convenience, we have two locations in Good Thunder and Mapleton. Call or email Craig Walters in Mapleton for sale and delivery information.