DO NOT get a pet if you're not ready to move them with you...
I just need to vent about this because I can't understand it. I recently moved countries (not very far, from New Zealand to Australia), and I moved my cat (who I've had for many years) with me. The number of shocked reactions I got when I told people that he would be moving with me. They look at me like I am completely crazy. Even some of the questions would be "Oh, that's awesome you're moving! So who will you be leaving your cat with?" like that was the only solution.
In the big scheme of things, it didn't even cost that much to take him with me, a couple of grand at most. People would spend this amount on holiday and not even bat an eye. The minute you tell them you're bringing your literal FAMILY MEMBER with you, it's as if you're a complete lunatic.
I can't preach this enough... if you know you will never consider relocating your pets with you if you happen ever to move interstate/internationally, DO NOT get a pet. You are their WHOLE WORLD, and to be okay with leaving them behind just because it's what you deem to be a financial burden is completely irresponsible. I am actually disgusted with the reactions I've received. If you know that would be your reaction, seriously do not get a pet.
Imagine one day their whole world (you) is with them, and the next, you're gone... and they can't understand why. Blows me away.
I understand in some situations there may not be a choice, but for the majority there is a choice.