I just received my first bulk hop purchase through hopsdirect this morning and happened to calculate how much I was saving vs buying through a typical online retailer.
3lbs of hops (Cascade, Willamette, Magnum) shipped to my door for $43
After weighing the packages I received 54 ounces of hops (hefty pounds)
So buying in bulk my hop cost is about .79 cents/ounce vs 2.15 / ounce at my online retailer saving me about 60% on my hop cost. (this assumes that none of these hops go to waste and I only use these 3 varieties)