I have a few questions about the GA10 as well.
Looking at the brochure on the Gippsland website... It says the empty weight is estimated to be 2350lbs. With a MTOW of 4450lbs.
Gives you a payload of 2100lbs. 10 occupants at 165lbs each (Standard weight 75kg) is 1650lbs.
That gives you 450lbs for fuel and baggage. Assuming they all bought 20kg, or 44lbs each, thats 440lbs for baggage, leaving 10lbs for fuel....
That engine better be economical.
Next question is, the brochure also says it can carry 500 gallons of fuel. With a 2100lbs payload... well from what I remember in the caravan, 332 gallons is 2244lbs.
How can you carry 500 gallons when that works out to be roughly 3400lbs?
If you want to be carrying around passengers and baggage, I can't see any benefit to this aircraft with those weight restrictions. You'd be better off buying a GA8 and save on maintenance?
This plane is competing with the Cessna Caravan, the Kodiak Quest, and the PAC750 to name a few. All so far can carry a much bigger payload for a slightly higher fuel burn and they can full the seats and fly a decent distance.
Now if this is a typo in the brochure then I can understand!