No. This is similar to the desert example. If we had known there was an oasis over the hill, we would've valued our only water bottle differently. Just like if we knew the prince was a fraud, we would've valued our money differently.

As you see there are two distinct examples I'm going with:

1. A change in information about the external world

2. A change in our wants/needs/desires

Your Nigerian price example is more of the type 1 example.