May I ask what such an inverter will be used for? I owned one, maybe 12 years ago, but never used it. I owned it because.....others did.
Since then I never missed one. All devices are running on USB or cigarette lighter: freezer, laptops, camera, navigation, torches, etc.
I came to the conclusion for me that the loss of energy of the conversion can be saved and all we need has 12 V supply today.
I might need to add that me and my wife have short hair, so we don't need a hairdryer. Due to the lack of space we also have no dish washer, no washing machine and no microwave on board.
AWo