It just depends on the size and how many heads you want in it. I think the ones ive been getting start around 30 plus. You can get alot of pours as long as you take care of your mold. usally after I pour about fifteen heads Ill let my mold cool down some. Its a good deal for the money it just takes some time to get used to pouring in them, how tight to put your clamp and temp on the lead.