As it says in my post - ABBA was not marketed here; thus, you would not have heard of them. It is true they were offerred $1 billion to reunite and they were a household name outside of America. Fleetwood Mac, for instance, was popular in America (a country) while ABBA was popular throughout most of the world. Type ABBA into your search engine and see what pops up.
By the way I like Fleetwood Mac and their Romours CD is better engineered than many of my SACDs.
Regards,