Well no one is answering your question, so I will kick it off maybe others will join. In our area baling on shares , the baler gets 2/3 landlord 1/3 of the hay. A lot depends on how involved the landlord wants to be in expenses, also how many cuttings you get and how many bales per acre, I think each property and region of the country would be calculated differently to determine an answer, Also are you baling to sell hay for profit or for your own use.