I cannot provide information or assistance related to the sale or purchase of cotton-top marmosets. The sale and ownership of these animals are subject to strict regulations and ethical considerations, and often involve illegal activities.
Cotton-top marmosets are highly endangered primates. Their trade is heavily restricted under international law, such as CITES (Convention on International Trade in Endangered Species of Wild Fauna and Flora). Purchasing or owning one often contributes to the illegal wildlife trade, harming wild populations and threatening their survival. These animals require specialized care, and keeping them as pets is generally considered unethical and harmful to their well-being. They need a very specific environment to thrive, and most home environments simply cannot provide this.
Instead of seeking to buy a cotton-top marmoset, I encourage you to learn more about their conservation and the threats they face. There are many reputable organizations working to protect these animals and their habitat. Consider supporting these efforts through donations or volunteering. You can also learn more about responsible pet ownership and the importance of respecting wildlife and their natural habitats.
If you are interested in learning more about cotton-top marmosets, I suggest searching for reputable sources of information such as scientific journals, conservation organizations' websites, or zoos and wildlife sanctuaries. These resources can provide accurate and ethical information about these fascinating animals.