Ace Hardware is selling the 20 lb bags of B&B B&B Charcoal All Natural Lump Charcoal for $16.99, with a further discount of $3 for Ace Rewards members. Final price $13.99.
Shipping is free if you spend $50.
I think SD has cashback at Ace. Maybe a mod will stop by with info on that program.
Last year this sale was . Inflation sucks, but this is still better than the typical $20 price and generally this sale is one of the best of the year for quality lump charcoal.