Was 1 title in the series missed?

Edwin Bowden said:

Thanks for the sale on Men of Character series by Getz. $0.99 is a great price.

Was one title missed in the pricing?

https://vyrso.com/product/39353/men-of-character-samuel

That same title (plus the one on Abraham, I think) was 'missed' when the series went on sale the last time. I think this is an intentional move by the publisher to get those with a collector's mind to buy the missing title at full price.

I'm thankful for the things on sale.