I got it yesterday. The base game is $40 USD on PC, though I expect that would be more in Australia. I can definitely see the comparisons with TF2, and it's a game I'm really enjoying. People probably hate me for it, but I've been playing Mei. She's like an ice version of the pyro, mixed with Ymir from Smite. I've just been looking for more people to play it with. Or any people, for that matter. I'm steadily improving my aim on PC, though there are some heroes I still can't play too well.
All of the game modes are objective based, I think, and there is a lot of variety in how the heroes function. Some require precision, some don't. Reinhardt doesn't even have a gun.