I don't know if this would work for your situation but I sell my eggs for $4 a dozen & offer "free delivery to most locations". I say "most" in case someone is very far out of my way and I don't want to drive there. But I drive into town once a week anyway to take my boys to the big public library and most of my customers are conveniently located along the way. So I'm not using up much extra gas to do the deliveries and in a way they cover the cost of my library trip. My customers call or email me by Friday, and if I have extra eggs I'll start calling & emailing them. It usually works out even, thank God. If ever I have more customers than eggs I tell them I'll put them on top of the list for the next week. If I have extra eggs I'll make a lot of quice & French Toast over the weekend.