1. If you just learn a hobby and learn to cook breakfast for your family and children, the cost will be cheaper. If you open your own breakfast shop in order to start a business later, you will learn more, taste more and cost more. But the difference won't be too big.
In addition, the prices in different regions will be different. First-tier cities may be a little more expensive than third-and fourth-tier cities, so I personally suggest that if you really want to learn technology to open a shop, you can go back to your hometown and learn it at a cheaper price. Going back to big cities to work hard after graduation can reduce costs and maximize benefits.