If the return rate is truly 30-40% wouldn’t this be easily proven by quarterly income statements? Even at the generous assumption that every item is sold for do

If the return rate is truly 30-40% wouldn’t this be easily proven by quarterly income statements? Even at the generous assumption that every item is sold for double the wholesale price if 1 of 3 packages are returned and tossed/recycled or otherwise not resold I can’t imagine Amazon being even close to profitable as a retailer. I know Amazon was famously unprofitable for years but those days are gone now right?