If the disclaimer was visible, probably no case.
If the disclaimer was not visible, yes, it was pricing fraud.
Regardless of whether the disclaimer was visible or not visible, disingenuous and intentionally misleading.
I used to do web sites for folks, but pretty much shut that down. Folks didn't want to pay more than trivial money, didn't want to pay for continued support, did want continued support (without paying for it) and didn't want to provide timely content. Menu would be an example of timely content. Unless the client is willing to pay the web developer to visit in person and get the menu for themselves, there's zero way a web designer can pull that kind of info out of their fourth point of contact and put that information on the site.
Yes, businesses do use the excuse "Oh, we're not good with technology", but it's rarely an actual technology issue and moreso no one wants actually assemble the information.