How would someone go about putting together a female wig selection and display in your beauty salon?

my stepmom owns her own beauty salon, goin on 30 years now, and alot of her clients are older women, she is thinking about putting up a display for wigs for the clients with thinning hair. how would someone go about that?How would someone go about putting together a female wig selection and display in your beauty salon?
probably by finding a good company that sells them, and buying a few at a time, so customers have some selection.