Firstly, iWeb is not really free and never was, because to get it for "free", you had to buy some sort of Mac first, which is a little more expensive than $80.
Also, have you not read any of the other posts on this thread? EverWeb does do the same things as iWeb did, but it can do more and vastly more from within the application, unlike iWeb. You can enter SEO in EverWeb, use drop down menus, put in slide shows, use master pages, place PayPal apps on your page, use the built in contact form and lots more. You could do none of these things directly from within iWeb and you had to look at third party options for a lot of these things, such as drop down menus, SEO and contact forms.
Also, remember that iWeb is 5 years old and is no longer sold or supported, so there is definitely logic in switching to EverWeb - EverWeb is a supported product that is actively being updated all the time and can do all those things, such as drop down menus, SEO and contact forms from within the app and you don't need to use other things, so yes, there is most definitely logic in that, in that EverWeb can do all the same things as iWeb, but much more and all without having to leave the application, as you had to do in iWeb.
Looking though old posts on these forums is testament to that, as people asked for explanations of how to insert slide shows into iWeb and what needed to be uploaded to servers etc and what needed to be used to link the 2 together in iWeb - well, this can all be done very simply without all the fiddling around directly in EverWeb without anything extra.
Think on - it is time to leave iWeb behind and move on!