Ahhhhhh product design my arch nemesis.
As someone who works in branding/advertising it doesn't matter how nicely packaged or designed your item is, if the market research isn't properly done then don't expect it to fly of the shelves immediately.
I've had clients who wanted "
everyone" to buy their product, and thus making no one want to buy it because of how generic it was, so you have to find a target audience who your product will cater to who is willing to take a chance in buying something new. From the looks of how those teens at the end saw it, it was a more "high-end" food which was targeted at convenience stores. Those tend not to sell that well immediately because of the location being a place for cheap food, but once word of mouth/advertising kicks in, then maybe it stands a chance.
Ofc there are other factors like price point, shelf life, production demand, expiration, etc. That will affect how it will sell, but those are all business matters and not so much brand design.
@Oh_my_goddess
From my experience usually really high-end sweets/chocolates are sold in coffee shops/boutiques where customers who don't usually care about prices go to shop.
But assessing the quality of the packaging in the manga, it's not that far into the high-end area since it's using a plastic packaging to wrap the sweet, so it's within the mid-range as packaging is concerned. I guess the convenience store is the place to sell it, but then it would need a ton of advertising to break through to the intended market.