1 - yes, click the PRODUCTS link at the top left and see for yourself... Premiere Pro and Encore are bundled
2 - not sure... I've read that Adobe is (has?) changing things so people may not sell previously licensed software... which used to be possible if the owner DE-activated and filled out a form
The 3 "versions" you post are...
1- full version, you do not need to have any previous version
2- upgrade, you must have a previous version to install
3- upgrade, not sure why price is different than #2
Be VERY wary of buying eBay... lots of real looking fakes