Siamese cats typically cost between $500 and $2,800 when purchased from breeders, with show-quality cats or those with rare coat colors being more expensive. Adoption fees are generally lower, ranging from $75 to $175, but purebred Siamese cats are less commonly found in shelters. Initial setup costs for supplies and veterinary care can add several hundred dollars more. Monthly care expenses range from $115 to $600, depending on food, health care, and other needs. Overall, one-time costs including purchase and initial supplies range from about $750 to $4,175. The total lifetime cost of caring for a Siamese cat may reach between $17,000 and $23,000. Prices may vary by location and breeder reputation.