I personally value acorns at about 10 acorns to the dollar. That's how I arrived at the ATP shirt price: $12.50 or 125 acorns. That has worked out pretty well. So raffle tickets (5 acorns) cost what I would consider to be 50 cents.
Rick, I'd love some of your lettuce and can paypal you whatever you think is appropriate. We grow a lot of lettuce in the fall but don't have any seed yet so if I got some from you I'd be all set.