Health How much is a ferret wellness check? How much is a ferret wellness check? When ferrets are younger, an annual and well visit can cost between $50 and $75. As they get older, it is recommended that they have their blood work done which can increase the cost by $140 or more.18 ago 2017 How much does it cost to maintain a ferret? Ferret Cage $50 – $300 ------------ -------------------- Vet Checkups $100-300* (Annual) Vaccines $20 – 150 (Annual) Ferret Toys $20-50 (Semi-annual) Carrier $20-60