[grooveless touque]

Another thing that must be figured into the calculations (even though it is folly to estimate album sales from such abstract evidence) is that many households own more than 1 album. Every one of our households probably owns 10 albums. That 1.8 million is a bare minimum hypothetical one-album-per-householdfigure, because we know that the first three albums have surpassed the one million mark...the last four albums have sold half a mil or less, meaning in an incredibly loose estimation, most likely they have sold 6-9 million albums.