Avril Lavigne  million lets say  as Billboard says in case you dont like   I calculated ALL the sales of Avril Lavigne as listed with SOURCES in her wikipedia album pages And Billboard says  hell yeah but nikkansports says  million Because Let Go m  Under My Skin m The Best Damn Thing m Goodbye Lullaby m  Avril Lavigne    Which all of them are sourced in her discography page Which makes it m Claimed m albums  m singles  m What is wrong with wikipedia by the way Drat All pages says different things even if they have a SOURCE People hint undo pitilessly Im not saying you or everyone do that way but please check her pages