Canadian certifications
Greatest Hits  500,000
Arrival  200,000
The Album  200,000
Voulez Vous  200,000
Gold - Greatest Hits1,000,000
More ABBA Gold    50,000
Best Of - Millenium Collection  100,000
Icon  80,000
 The ABBA Collection  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.