he is exactly right.. it depends on how it was grown and what strain it is... i have seen a 1 gram bud and a 3.5 gram bud look about the same in size... but when all ground up to be rolled the difference was HUGE

the real wake up call to buyers should be 'grow your own' if ya ask me
you pay more (by weight) for weed from a dealer than the price of gold... thats crazyness