Usually when people buy things at a store or even at say a restaurant you would judge the prices of the items based on what everyone else charges as well to see if it is a good deal or not. Just the other day I went to a restaurant with my parents where the place was renovated and was now owned by a new person. The inside definitely looked fancier and the menu prices were more expensive.
The funny thing was how my parents commented that it was because they have to pay for the renovations and they were perfectly okay with that. That then made me think at how important the interior design of the business can be in influencing people to pay more for your products or services. I guess this can even be true for almost anything such as the look of the packaging for items or even the visuals of a website. Of course it can only go so far as if your items are truly overpriced or are not up to standards then even not even the best looking store or packaging will help in the end. But it is definitely something to seriously invest into.