AITA: Refusing to buy 1000$ shoes

AITA. My girlfriend of 5 years, who I’m planning on getting married to just raised a new request to buy a 1000$ pair of ballerinas.

For some context, I recently started working a 4k a month salary, she started a job earning 1k a month. We are doing long distance. I come from a middle class family, never been into buying expensive things, I appreciate money, throughout the entire relationship I have spoiled her, tried to pay for everything I can, I am planning on getting her a ring thats gonna be around 2k. I have also promised to spoil her in the future when I am making more money than I am right now.

Now she is looking at shoes that cost 1075$, I told her that I find this as burning money. She is accusing me of lying saying that I lied about wanting to spend on her but now I’m putting terms and conditions about it. I feel like spending this amount of money on jewelry or things that would last could be reasonable, but on shoes that you’re gonna step on the floor, just goes against my ethical and moral standards points.

Now she is calling me a stingy snob and a liar. Given the fact that I have tried to spend everything on her and would never tell her no before, should there be no limit? Am I being gaslighted into thinking it’s normal to get 1000$ shoes? She is saying now she has to buy everything for herself and now she knows the kind of man I am who would not spend on her and spoil her. I really would want to spoil her but not with shoes that cost that much.

**more info**
Shes living with her parents and currently has no expenses so she is getting pure revenue on her 1k salary while I have an apartment and a car and communications and I have to feed myself.

She is making an ultimatum that she is gonna buy the shoes on her own and does not need me, and is calling me a liar because I told her I want to spoil and spend on her in the future when I have money but I am rejecting the idea of buying her 1000$ shoes at any point because I think not a single shoe in the world should have a 1000$ price tag.

I am a hard working person and in the coming few years will most likely end up with a much higher paying job, she is basically telling me that since I am not accepting the idea of the 1000$ shoes now that I won’t spend anything on her in the future, she told me “that means in the future I will have to work on my own to get the expensive things cause I know you won’t get me anything”