Well as I can see from your site, you've edited the header...
You will have to re-trace your steps to try to undo what you did, and at the same time, try to retain that new link you put in.
You could start by re-instating the ORIGINAL header file, after making a backup copy of the one you edited.
Then, try again on the new copy, to add that header link.
Personally, I don't think you need that header link there. It could be better as an EZ-Pages link, and you can invoke the EZpages Header Menu Bar and put the link there.
You can then create a dedicated page to the link, explaining your pricing policy, instead of directing it to the shipping info page.