hi Gary I recently moved 7 animals Australia to Thailand. Will cost you around 1k usd for each cat your right with that, and I would recommend using a pet travel agent to do the whole lot it will be a lot easier for you and would fit into the 1k budget per cat, if you did it yourself it will be cheaper! If you need any help feel free to PM me, and thanks for being a good human and not willing to seperate your cats like most others would 🙏🏽
don’t forget some countries also have a double tax agreement with Thailand and many others, for example income I’ve earned and paid tax on in Australia I don’t pay tax on in Thailand because of the countries tax treaty with one another.