Questions often arise as to what constitutes a fair rental price. Since there is not a commercial market for pasture, determining the price often becomes a matter of bargaining. Supply and demand is probably the most important factor in determining the price. If there is a large quantity of pasture available in a given area and very few farmers needing extra pasture, rents may be low. Likewise, if there were little pasture acreage for rent but many farmers needing extra pasture, rents may be bid higher.
From OSU Factsheet, Establishing a Fair Pasture Rental Rate, FR-8, By Jeff Fisher and David Mangione.
This is a good source for information if you are in discussion for pasture rental agreements and seeking guidance on setting a price.