Canadian certifications
Greatest Hits   500,000
Arrival   200,000
The Album   200,000
Voulez Vous   200,000
Gold - Greatest Hits 1,000,000
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 50,000 sales

Certification levels for singles and albums downgraded in 2008.