I know the brethen have a thread on this topic. Don't recall seeing one here. Sorry I guess this was covered in a different area that I don't frequent.
Today's Lowe's flyer has Kingsford 2 20lb bags for $9.99. Limit 2 twin packs. It is not a real limit. We just picked up 3 twin packs no questions asked. Also, used my wife's 10.00 off of $50.00 which makes the deal a little sweeter.