If it's 10 gauge I would strip it. If it thin wimpy stuff, I would burn it.
I don't burn wire. Around here at least, you'll get more for it insulated than burned if it's small. They discount burned wire severely last I checked.
What I strip or not depends on how much spare time I've got, but I always strip #8 or bigger. 10-12-14 only if I'm bored.
I think mid $2 is pretty good. That's probably as good as I've ever made, but I haven't sold any in a couple years.
You guys can just call your local scrap yards and ask what they're paying for what. You'll get more accurate answers than T-man.