Around here it depends on the brand. At our store we carry Humphrey 20 lb bags $15.99. Then I give a card once they buy 10 bags I give the 11th free. For pallet orders I charge $12.00 a bag.
The hardware store behind us sells Cowboy 20lb bags for $14.00.
Best consistent price I've found by far is Restaurant Depot (there is one in St. Louis if you have access). I can't remember the exact price, but a 17.6 lb bag is around $8.00, which is less than 50 cents a pound.
around here I buy Wicked Good i think has 22lbs for $20 and Big Green Egg has 20lbs for $17. After seeing some of you guys post my local cost seems a little high.