It is nearly impossible to buy a finger monkey (Pygmy Marmoset) from a pet store — not only are they very rare, they also require special care and are very expensive. The cost of a finger monkey can range anywhere from $1,500 to more than $4,000, not including the cost of a large cage and other supplies. Additionally, you must consider any potential legal fees and licensing costs.
In conclusion, if you decide to purchase a finger monkey, expect to pay a hefty price.