It's natural to want to know how much it's going to cost to build your website. But, it's not reasonable to expect that anybody can give you a direct answer. Imagine sending an email to a custom home builder and asking "How much does it cost to build a house?" The home builder would need to know where the house is being built, the square footage of the house, the desired finishes, and so many more things. It's no different when building a website. There are so many variables and questions that you must answer.
If you are truly interested in understanding what goes into creating a website and being able to get a good estimate of how much your website will cost, I would suggest that you take my course, "Build a Successful Website." It's available on Udemy, which means you've got lifetime access and a money-back guarantee. The course walks you through step-by-step to answer all the necessary questions and results in the creation of a website definition document that you can hand to a developer. Here's a coupon to give you access to the course for just $10! Enter the password "BeSuccessful!" (without the quotes) when prompted.