The Concord Diner, a year-old 24-hour restaurant in North Wilmington, is for sale – on Facebook Marketplace. “Used – like new,” says the listing. It gives the price as $220,000. Uğur Dizman on Sept. 10  also listed the sale of the business on his personal Facebook Page. RELATED: Brandywine Restaurant to become Brandywine Brasserie Dizman did not respond to requests …