Canada

 

 Canadian certifications
Greatest HitsPLATINUM x 5  500,000
ArrivalPLATINUM x 2  200,000
The AlbumPLATINUM x 2  200,000
Voulez VousPLATINUM x 2  200,000
Gold - Greatest HitsDIAMOND1,000,000
More ABBA GoldGOLD    50,000
Best Of - Millenium CollectionPLATINUM  100,000
IconPLATINUM  80,000
 The ABBA CollectionPLATINUM  100,000

source: here

NB: Fernando, Dancing Queen, Knowing Me, Knowing You and Take a Chance on Me all certified gold for 100,000 sales

Certification levels for singles and albums downgraded in 2008.  Voyage sold 19,000 in 2021.