As far as figureing out a price for the lease, I guess I probably can't help you there. But if cash is that tight for you, be up front and honest with the guy. Ask him if there might be some odd jobs or some work around his house or land that you could do in exchange for hunting rights or permission. If he's an older gentleman, I bet he would take that over some cash in a heart beat! Just an option for you.

Good Luck!