All of my blocks were under 8 pounds. Most were 6-7. They were all made different dates, some were 6 months old and one had green mold.. Some didn't have enough moisture so I asked for 2 more blocks to make up for it. They sent two more and one had a hole in it. I guess it goes shaken up during shipping. Either way not very pleased. I see these taking awhile to fruit. Hopefully will grow enough mushrooms to make up for the price but I doubt it. Customer Service was pretty good though..