I've seen advice on this very web zone that the cheapest possible way to stock your pantry is to take a barrel out to your nearest bean farmer and pay him fifty bucks to load it up from his silo. It's 20x more than he'd get paid for the amount you take and you get fifty gallons of dry beans to tide you through the end of the world.

I believe the buyer is responsible for taking delivery of the potatoes, so they have to pick up/pay for delivery and deal with all the logistics of what to do with all those potatoes