You are bang on the first one, and right, but for the wrong reason on the second.
Audio artifacting is usually the result of compression, either in the encoding process or possibly in the comp/limiter. I wouldn't want to mess with someone else's workflow, or how they encode, but spending a little time on the audio setup on each shoot, rather than trust that a dial didn't get bumped, makes worlds of difference. Watch the last 4 episodes of the WAN show for evidence of that.
As to how much a new hire costs, you measure that against how much you're hurting your brand with sub-superior audio. I don't know what the market is in BC, but where I am, full time sound engineers and recording engineers start around $40,000-ish a year US. I was one for a few years right out of college with a music education degree. Great first job, better than teaching, in a lot of ways actually, and I was very lucky to get full time, as I'm in a very weird market. Tons of skilled people here drive the saleries down.