Super Dave and others who buy relatively large amounts of meat:
You might check out restaurant supply houses. We have a local one here in Boise and I seem to remember pork shoulders for about $1.50/lb or so. You had to buy a vacuum sealed bag of 2 (about 15 - 20 lbs). The last time I bought them, I smoked one and froze the other. I'm waiting for it to warm up a little more before I get a couple more for smoking.
Mike