I am quite sure there are no legal copies of any edition of the OG on the Web anywhere...
Yes - no legal copies. OG10
is old now, so most people would be reluctant spending money on it. Some good folks from testmagic and pagalguy forums managed to hack a unofficial softcopy though.
Personally, I own a legal copy of the OG10
book, but I still prefer solving from the softcopy, since on the real test I will need to be in front of the computer anyway. I do not encourage any one to bypass buying the book, but keep the softcopy as a supplement to train yourself better for the real test.