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I finally found Kingsford Competition charcoal. Not sure why it and Royal Oak are so difficult to find in Northern Virginia. Shoppers Food Warehouse had a variety of Kingsford coals ranging in price from $8.97 to $9.74.
Believe it or not the Safeway two blocks from me here in NW DC has Kingsford Competition. I see there are a few Safeways around Herndon and Leesburg. Give them a call if one of them is convenient to you.