Are Small Qty. Lumber Customers a Waste of Time? Selling Lumber from my Woodmizer LT15 Sawmill

Sometimes when selling lumber, I get customers that only want one or two boards that are only a few dollars. The time it takes to communicate and meet with these customers, costs me more than I get for the lumber. Should I discourage these smaller customers and only go for the larger customers?
I sell lumber that I cut on my forest land with my Woodmizer LT15 sawmill.