Why do people always think that their decoration is cheaper than the decoration company?

Some people think that their decoration is cheaper than the decoration company because they think they are relatively sure about the procurement of raw materials. On the other hand, they can better control the corresponding decoration process, so they think their decoration cost is far lower than that of the decoration company. First of all, it depends on your own actual situation, but generally speaking, it is cheaper to decorate yourself than a decoration company. Because, first, self-decoration can reduce the cost of a large number of decoration companies. Second, self-decoration and self-purchase of building materials may be a little more expensive than decoration companies, but the quality will definitely be higher and better than decoration companies. Third, the decoration company will come up with many different decoration methods from what you want. They will trick you into doing this and that, that is, you don't have what you want. If you decorate yourself, you can master your own style and effect. Fourth, except for a part, you don't do decoration work, you need some decoration masters to deal with it, and the cost will not be too high. Fifth, the decoration company will have many routines. Without relevant knowledge and experience, it is easy to get on the set and then buy their other products or solutions. If you decorate yourself, you may be a little tired and busy, but you will really save some money, but the most important thing is to look at your actual situation and economic ability.