I bought a bag of their mesquite lump once. I threw it in a chimney. Once it got a little hot, it started showering sparks like a 4th of July firework. I'm not kidding. It was an amazing light show.Not sure if it's been posted, but Sam's now has 20 lbs. of lump charcoal for $9.98.
Frontier brand. Picked up a bag, but haven't tried it yet, so I have no idea how good it is. But that's pretty cheap.