That's true, but in an all-ebook model you'd need to price your product to cover those costs too. My point was that those costs don't change, but they're frequ

That's true, but in an all-ebook model you'd need to price your product to cover those costs too. My point was that those costs don't change, but they're frequently not considered when consumers are thinking about the 'cost' of what they're buying and the perceived cost impacts on people's perceived value for some items. Arguing that pricing your product based on its cost is mad doesn't really change that consumers feel that digital downloads should be priced less than physical media versions, even if the digital download has greater utility.