Thanks to Stretching a Buck for this Krazy Lowe's Deal:
At Lowe's the 18 lb. bags of Kingsford Charcoal are on sale Buy One, Get One Free through September 7th. One bag is priced at $8.48. Use this $2/1 coupon and get 2 bags of charcoal for a total of $6.48 ($3.24/ea). If Lowe's will let you use 2 of the $2/1 coupons, you can score an even better deal. The ad states that 2 free bags are allowed per customer.