To be honest, I have actually ordered and paid for a RMN9 NFC version on Lazada during the 11.11 sale, but the seller sent me a non-NFC version instead, not to mention the wrong colour. I disputed that purchase and returned it for a refund that is still being processed. A few other sellers on that platform whom I have contacted had also advertised their RMN9 as with NFC also later confirmed their stock was in-fact without NFC, and that was when I decided to look at a different model altogether. It was fortuitous that the PM3 was announced and launched a week later, and it had the specs and features I found to be satisfactory and was also within the price point of a sub $2xx phone after promo and vouchers.
If you are looking at the RM10X China series, I would suggest maybe looking at RMN9 models with a price point that you might be comfortable with instead. Based on what I found online, they are basically the same with the exception of some minor differences which may be omissions of data on website comparison charts.
Are you in need of replacing your current phone with some urgency? If not, I would still suggest possibly waiting for the RMN9 4G China series instead, which has specs closer to the PM3 that is due to launch in Dec 2020 according to what I have read.