Color of value $$$

Why does the value of some the books show up in white and some show up in blue?

Different ribbons explained:

Blue value: This is the CovrPrice value for your grade.
Grayed-out value: This means that this comic has a stale value (looks like that is the case for yours in your screenshot), or this comic got a value for Most Common Condition (it will say he common condition in front of the gray value) if there isn’t a value available for your grade.
A person icon: In that case, you have filled in your My Value (this overrides the CovrPrice value).

TIP: You can tap “view on CovrPrice” on the comic detail page, to view the selected comic on the CovrPrice website.