All feedback left for the past few months (could not be bothered to look further) shows the same feedback as what we have been getting, so don't think it's hacked.
I was buying a birthday present for my girlfriend yesterday that was £90 and £90 on Amazon, within a few secs it dropped to £60 on firesale, there was only 2 items on the whole of Amazon, whats the chances of that? My buying luck my be with me on this one

But just looked at my feedback, I have the same word for word feedback as another seller I bought an item from, maybe they use the same feedback generator...
