Ann: Continuous Gas Flows Achieved, page-12

Arrow expects 300Tj per day from 600 wells at peak so they are happy with 0.5 Tj per day per well. cf Walyering 30 Tj per day from 2 wells.
The economics Rubic's cube has only got three colours:

• Flow rate say 1 Tj per day
• Sell price say USD 3000 per Tj
• Cost per well say $1m

The calculations are very very floppy at this stage. A flow rate above 1Tj per day will be good.
I have no idea what the sell price will be. There is no market for raw gas in Mongolia, only electricity made from gas.
TPD have signed a friendship agreement with the CCP gas company so there is a commercial pathway to China sales. I don't expect a high price with a single monopoly buyer though - Russian price?