If it's labled "80wt", it's not really Aurifil.
Yes, it's Aurifil. There are a lot of Aurifil threads made at the Italy plant that are not usually sold by US retailers.
Wonderfil and Coats make a 100 wt thread so 80 wt isn't all that odd. It use to be known as lingerie thread.
It's sold online at several websites on the smaller spool. Only comes in black or white.