The cost of a marmoset monkey can vary greatly depending on the particular animal being purchased. Prices range from a few thousand dollars, for common species, to over $20,000 for rare species. On average, marmoset monkeys cost between $3,500 and $8,000.
Price is also largely determined by the animal’s age and whether it is being purchased from a breeder or a pet store. Additionally, many states regulate the sale of marmosets, so additional legal costs may need to be factored in.