Long term I don't think NdPr is necessarily going to be priced...

Long term I don't think NdPr is necessarily going to be priced in Renminbi by Western markets. It's a point worth contemplating if you want to talk about 'long term' and various scenarios.

The situation the world market for HREEs and LREEs currently experiences could be described as a "Coercive monopoly" in the sector
https://en.wikipedia.org/wiki/Coercive_monopoly
Another concept to contemplate is a Predatory Pricing strategy to either reinforce or create a monopoly.
https://en.wikipedia.org/wiki/Predatory_pricing

The current situation in the sector is getting a lot of attention and coverage in the media, with lots of news of nations, governments and private organisations making plans to 'secure supply' and challenge that monopoly.

There's also coverage of an export ban of Rare Earth products and an updated 'technology export restriction list' by China.
Source: https://asia.nikkei.com/Spotlight/Supply-Chain/China-weighs-export-ban-for-rare-earth-magnet-tech
The question to contemplate is what is the market price of these elements ex-china going to be in say 2-3 years or even 5 years time if they were placed on an export restriction list? Are they going to be banned completely, or would they just have a 500 RMB tariff placed on them? (as an example)

Good article in the AFR today about "Critical minerals"
https://www.copyright link/companies/mining/the-critical-minerals-boom-is-about-geopolitics-not-geology-20230519-p5d9t7