Scott National Album And The 2 Cent "Broken Hat" Colombian (#231)

My Scott National Album doesn't have a space for stamp 231c, the 2 cent "Broken Hat" Columbian. It DOES have a space (on a separate page) for stamp 233a, the 4 cent Columbian stamp printed with blue ink, rather than ultramarine.
I don't plan on spending over $10,000 for stamp 233a anytime soon. So I am contemplating putting the 2 cent Broken Hat Columbian stamp on the separate error page instead. (I prefer to think of myself as "thrifty" rather than "cheap"!)
Here's my question: Does it seem odd to anyone else that Scott decided to have a page for the incredibly rare blue 4 cent Columbian, but not the more common (and affordable) 2 cent Broken Hat Columbian? I thought (perhaps mistakenly) that the Broken Hat stamp was a popular and collectible error.
Thanks!

Yes, the tyranny of the pre-printed album! I think there is also a space for C3a. You can collect any way you want. You might want to make a separate page for the broken hat as there are several variations as the transfer roll deteriorated. See Volume III of Lester Brookman.