Chambo dear, we are not discussing generic luxury goods here, of course you are right about those. Japanese vanity fruit (esp. packaged as you've included in your post) exists exclusively for gifting purposes. It offers the recipient perfect knowledge of how much was spent / wasted on them, which is very important for some Japanese reason. It is also inherently perishable which is also very important for some Japanese reason.
This does not mean there isn't expensive fruit meant for consumption with price (supposedly) based on quality or demand, but it's just not that fruit.