HELP: Distribution beauty products using Amazon

Hi yall, I own an Australian consumer goods brand however majority of our target audience is in the USA. We have a shopify store but looking into launching onto Amazon as a distribution pathway.

I got some questions:

Is it worth it using Amazon USA as a fulfilment center/listing your products. (Low MOQ 1k max) How much does it roughly costs? Any other affordable fulfilment centres you recommend for international sellers?

I want to know if it would be a good way for us to reach our target market located I n the USA!

Thanks in advance