So you expect someone to give you a discount because your beautiful?
Charisma isn't just physical beauty.
German sociologist Max Weber defined charisma as:
...a certain quality of an individual personality by virtue of which he is set apart from ordinary men and treated as endowed with supernatural, superhuman, or at least specifically exceptional powers or qualities. These are such as are not accessible to the ordinary person, but are regarded as of divine origin or as exemplary, and on the basis of them the individual concerned is treated as a leader.
and its dictionary definition is:
S: (n) charisma, personal appeal, personal magnetism (a personal attractiveness or interestingness that enables you to influence others)
and Wikipedia has its etymology as:
The English charisma is from the Greek χαρισμα, which means "grace or favor." The term derives from χαρις (charis), which means "grace." Derivatives from that root mean "filled with attractiveness or charm," "kindness," "to bestow a favor or service," or "to be favored or blessed." In short, χαρισμα, its root χαρις, and the root's derivatives have meanings similar to the modern sense of personality charisma. Moreover, the Ancient Greek dialect widely used throughout the Eastern Mediterranean in Roman times employed these terms without the connotations found in modern religious usage. For example, ancient Greeks applied personality charisma to their Gods, attributing charm, beauty, nature, human creativity and/or fertility to goddesses they called Charites (Χάριτες).
So based on the definition and etymology of the word alone, it would be quite acceptable for one with a higher charisma power to have greater influence over others that would allow them to receive favors, such as discounts for services and goods, or increases in money received when selling an item.