Just pay a little more for hand picked. The consumer will pay. I think the cost of labor for hand picked fruit and veggies is like 2 cents per head of lettuce for example.
I believe the per head cost is more than that. But, the real cost is not the harvesting. The real cost is in the handling, that is preparing the product for shipment, packing, transportation, distribution center cost mark-up and then the store mark-up.
Truthfully speaking, what the grower receives for the product is fractional compared to the added costs to get the product to a place where you can purchase it. Exception being if you live close enough to the growing area where a road-side stand or farmer's market exists.