I don't want to pay for a concert ticket
Are the tickets too expensive? Why don't you want to pay?
I'm going to refuse to pay him because it's obscenely expensive! It's terrible!
You shouldn't expect others to pay for you. If it's that expensive, you shouldn't buy it.
I can afford it and they have no right to make me pay for it.
If you've already committed to the ticket and you can afford it, you should pay for it. It's not fair to force someone else to cover your expenses just because you don't want to pay.