It was out also out of stock when I went to buy some, but the service desk substituted (2) 15lb single bags for the double pack. So, I bought (4) packs, or (8) bags for under $32.00
http://www.walmart.com/ip/Kingsford-Charcoal-Briquets-Two-15-lb-Bags/43945919
(2) 15LB Bags of Kingsford Blue for $7.49, the cheapest I have ever seen it.