I found Linda Purdy selling their flour and bake goods at the Oakland County Farmer's Market. They sell out fast so my wife and I decided to drive up to the Mill. It was worth the trip. Lee Purdy was very helpful and we were able to get what we wanted. Every sack of flour was milled that day and our bread and other baked goods never tasted better.
If the Oakland County Farmer's Market is closer for you, call them up and make arrangements to pick your order up there.