Need help to understand the scrap business of copper wires

Firstly welcome from Central NY.. secondly, seems like you're after copper only which is cool but keep in mind that collecting copper only limits you to collecting other things such as Aluminum, Steel, Tin or Precious Metals like Gold/Silver/Cobalt/etc.. I don't recall anything specific on the forum reguarding these so let's see if I can help answer your questions.

1. Depends what you put into it - if you don't put any time or effort into it, you won't make any money.
2. There is none.
3. Your copper wire I'm guessing.
4. This would be something you would have to look into depending on where you plan to export to.
5. There's copper wiring in alot of places including CAT wire, Coax wire, Molex wire, etc..

Word of caution: don't be like the thieves we have here in the states and break into an abandoned structure because it's abandoned for copper. That's poor sportsmanship, is illegal, and is generally looked down apon on here. Most newer extension cords and PC wire have aluminum wire in them. Some older ones have copper wire in em. If there are any contractors near you you might give it a go asking them for their copper wire but don't be taken aback if they say no.

Think that covers everything,
Matt