He isn't lying about his take home pay. I know a few TRE's in RYR who are on the new deal and are taking home £9k+ (this will include working a day off or so).
Over the year the monthly take home pay will be less than that, probably somewhere in the region of £7-8k per month for a TRE.
Pay in RYR isn't bad, as the post above states, people don't have an issue with the pay, it's all the other stuff.