1. Yes, i have bought a lot of stuff, mostly it was some <Wstaw co kupywales>
2.I wouldn't ever buy something that costs too much, things like car's etc..
3.Yes, it is for lazy people, because they don't even try to move out of home to buy anything and walk a bit...
4.I know Ebay, Amazon, or Allegro. I only use Allegro, because it's our's country Ebay remake.