Final answer:
According to the final stanza of "Daffodils," the dancing daffodils give the speaker joy and inner wealth.
Step-by-step explanation:
According to the final stanza of "Daffodils," the extra "wealth" that the dancing daffodils gave to the speaker is joy and inner wealth. In the poem, the speaker describes how the sight of the daffodils fills their heart with pleasure and makes them feel joyful. This emotional wealth and happiness that the daffodils bring to the speaker is depicted as more valuable and significant than material riches, romantic companionship, or artistic inspiration.