Fair points, I didn’t see your previous comment before I posted.As I stated, this was through the end of 2021. I anticipate more copies of Somewhere in Time and Senjutsu to be sold as this tour progresses. With that being said, it took 5 years for Book of Souls to reach 1 million copies world wide. I was not a fan of the new album but still bought it and also bought 2 formats of it. Time will tell. Regardless, the fact that an album in 2016 could still exceed a million copies for a whole record and from a band that was 40 years old at that point speaks volumes!
Def Leppard released a new album last year and it hasn't passed 100k sales world wide and only reached 34,000 in the debut week compared to maiden's consistent 65k plus debuts recently. I use them as an example as they are a mainstream commercial act and to show the power of a loyal and solid fanbase Maiden continue to maintain.
I think 480,000 sales for Senjutsu is quite impressive actually if it’s only up till the end of 2021 considering it was only released in September.