Indeed we can. We just need an initial chat about what you want to achieve, then some ideas of the type of thing you are looking for. Some sites you like the look of, and we can start to plan it all out
That obviously depends, but a general rule would be that it takes less time the more organised you are, and the more content you have ready. The clearer the idea, the less time it takes to figure out and design & build.
These days with a Content Management System, the amount of pages is not really that important, you can have as many as you like. The work involved relates more to the different types of pages you require. So that is a more accurate gauge.
Like graphic design, websites are designed with a proof, or image of the design of the website, that you can chop and change and edit until you are happy. Then we build it and you become rich/famous/jailed whatever.
Hey, here's a joke:
Q: How do you catch a rabbit?
A: Stand behind a tree and make the sound of a carrot.