Yes, they certainly appear to be so.
I haven't clicked on any of the listed items in tonights email, but did a few days ago with different items - definitely Amazon.
Never had this myself before either and been using both for years.
Recently had an issue where the IE9 back button wasn't working on a couple of sites and a search showed some other people having the same problem, so was able to find solutions: one was google ad stuff inbetween the page I was viewing and the previous page, and the other one was a pinterest ad thing in the same position. Used the Windows tracking protection for the Google one and added the pinterest one to the blocked list.
Worked fine for both and had no further issues.
Just wondered if this Amazon/Ebay thing is something similar that gleans info.
I suppose it could be two creepy coincidences ...I'll see if it happens again.