Well, if you had adblocker you'd know, but I don't think that's it because I see it in IE the same
as my screen shot, not yours. That's why I'm kinda thinking it's on your end somehow. However, I don't see that "Lowest Prices Ever" blurb at all.
To see if you've got Adblocker, in FF go to Tools>Add-ons...under the Extensions section, does it show you've added Adblocker? If not, you'll also see a section to get add-ons. You can go there and search for it. Ad-block Plus 2.3.2 is what I'm running.
After that I'm at the end of my knowledge...sorry, but I'd try clearing cookies and cache anyhoo. Sometimes even when I think that can't be it, it does the trick.