I don't know how good it could be. I am a little worried to try it though. Here is why.
Stubbs regular briquettes are marketed by duraflame which is the same company that markets Cowboy Lump which the general agreement among most is that cowboy lump sucks.
I love Stubbs briquettes and hope the lump will be better than Cowboy.
Edit: I just checked duraflame's webpage and they do not have the Stubb's lump listed as a public product. So this may be a Costco only product or they have yet to update the webpage.
18.5" OTS, 22.5" OTG, CB Silver(Rip), Vintage Coleman Bullet, Pit Barrel, UDS