Answer : There is no simple answer to this question. It depends on a variety of factors, such as the size and complexity of the project, the level of experience and expertise of the designer, and the region or market in which you live.
That said, a well-trained and experienced interior designer can be worth their weight in gold, especially when it comes to larger or more complex projects. They can help you to avoid costly mistakes, save time and money, and ensure that your project turns out exactly the way you want it.