Standard rules of business normally apply to anything sold.
1. Product gotta be good enough to compete with other similar products
2. Price low-price, middle or premium, but it needs to fit the category
3. Place make it easy to find and purchase
4. Promotion tell the people who need this thing, all about it
If any of these are wrong you don't get market success.
But there are a lot of non-linearities.
Old Marketing joke:
"I know half of my budget is not working, I just don't know which half"
1. Product gotta be good enough to compete with other similar products 2. Price low-price, middle or premium, but it needs to fit the category 3. Place make it easy to find and purchase 4. Promotion tell the people who need this thing, all about it
If any of these are wrong you don't get market success.
But there are a lot of non-linearities. Old Marketing joke: "I know half of my budget is not working, I just don't know which half"