This is a common tactic on Amazon. But if Amazon finds out it’s over. They are pretty strict with any seller to customer communication even without the scam part. Just asking customer to visit your website is a violation.
As a side note, there are all the "as seen on TV" things.<p>Typically they are US $3-8 worth (price) i.e. US$ 1.5-4 worth (value/cost), advertised on TV as the "ultimate whatever" with a "shop price" of 50 $ but - only for tonight - 29.99 and sometimes (big offer) we will send you two of them for only 39.99.<p>Then a few months later you can find them on e-bay (or similar) for anything between 3 and 8 $.<p>For some strange reasons I am fascinated by some of this crap and tend to buy it (when I can find it at the lowered 3-8 $ price), and - surprisingly - it is actually IMHO good for the 3 or 8 $ you pay.
I just got $300 something in refunds from Amazon because the three automatic dropout handgun safes (with fingerprint sensor) I bought had a bullshit cylinder lock even a child could defeat.
This practice is not new. I had a online furniture site call me and say they will send a free gift, if I give a good review to a recent I bought on their site.