I’ve lately been encountering experts who have a “whatever you want” menu of services. It takes so long for me, when it’s an area that I don’t know what I’m buying, to suss out a real menu!
If you’re an expert in your field, make sure you realize that making offers is one of the most important parts of your job. We don’t know what’s even possible and may ask you to do something sub-standard just because we don’t know better.