Export prices aren't rising, much........., page-4

Thanks aus.
The earlier part of that translation you posted is also interesting:
‘In August 2018, China exported 4314.4 tons of rare earths, a decrease of 214.6 tons from the previous month, a decrease of 15.8% from the previous month and a decrease of 4.74% from the same period of last year. From January to August, China exported 35,141 tons of rare earths, an increase of 1.13%.

In terms of export value, China’s export rare earth amount in August 2018 was US$51.7 million, an increase of US$14.4 million from the previous month, an increase of 38.6% from the previous month and a year-on-year increase of 58.1%. From January to August, the total amount of China’s export rare earth was US$340 million. The year-on-year growth was 29.3%.