Hello,
I tried to make an estimate based on that website. The style is simple and clean, which is the kind of style I like most. From what I see, most pages have a static content with few interactive elements (the gallery carousel for example), so the first step of the job would be creating the CSS stylesheet, and from there move on to create the pages one by one. Depending on how often you expect to update your website, it may be useful to have a streamlined way to add new contents to the pages, which would take some more time to develop.
I am currently working, in my free time, on a amateur photography gallery/blog for my father. Since it's for him, I'm taking it as a test field to make experiments and I'm developing it from ground up, so of course you would expect some things not to work perfectly, but I could provide you a link to it to give you an idea of how I work.
Thank you,
Andrea