Yeah the problem is they also don’t tell us the load during the flight. From the lift equation (let’s be hand wavey) if they’re a similar size to a regional jet (same planform area) your heavy lift is better driven by speed than lifting coefficient. Of course, it’s hard to go fast with electric props, so I wonder if a safe ceiling is probably 400Kt 300Kt?

Gives a nice range of you know… 40 to 200 150 miles.

Edit:

No way. The speed record for a prop aircraft currently stands at about 300Kt. If we use that generously our new ceiling is lower.