Scrolling to the bottom of the above listing shows that "yourpricemusic" has a business name of "Celtic Visions", trading from North Works, Hookstone Park, Harrogate, North Yorkshire, HG2 7DB United Kingdom.
It seems obvious that the "unplayed 'mint' safety copy vinyl LPs" you hope still exist are now up for sale. As others have pointed out, even if you buy the last available copy, you still don't have the right to release it to the world.