We had a deal going with a major reloading supplier. About twice a year, a group order was called in, and two of the Police Sergeants drove down with a F350 Dually Pickup pulling an enclosed trailer and picked up the bulk order. Primers, powder, bullets, any other reloading supplies such as tool heads, dies, presses, and accessories. We got a pretty good discount for the large order, and the pickup. MY order was usually several twenty pounds or so of powder for the year, and about 10,000 primers and bullets split between large and small pistol and 38 and 45 Semi-wadcutter. Every now and then I'd toss in 1,000 9mm and 1,000 38 full wadcutter. MIne was one of the smaller orders on the list.
WAY cheaper than buying loaded ammo, even if you bought by the case, plus I liked sitting at the press late at night while everyone was asleep and loading 500 rounds or so.
Plus I was far from Master class. 
