Every time I have ordered from DMCH, it has always been professionally packed, and everything I ordered was there. The quality of parts however, was sometimes questionable. Power window switches that came with bulbs out, headlight switches that were fused improperly, parts that looked like they might have been used (I know, they have been transported around a lot, so they probably weren't), etc. I also have had to wait over a week for them to ship most of my orders.
for NOS parts though.... you can't complain too much. At least you can get the parts, which is better than most cars from 1981.