The cheapest monkeyavailable for purchase is the Common Marmoset, an Amazonian primate native to South America. These curious, playful primates typically cost between $1,500 to $4,000.
Adult Common Marmosets generally weigh between seven and eight ounces and grow to about nine inches long. Popular for their relatively low care requirements, Common Marmosets need to remain as as part of a bonded pair, with access to a cage or outdoor structure with plenty of enrichment objects. With proper housing, diet, and healthcare, these active little primates typically live for 12 to 15 years.