Bests & Worsts Reviews from Amazon

I don't think the following action by the seller of this product promotes honesty in reviewers: Enclosed with the sheets was a note stating that if the buyer will leave a five star review Bespolitan will send FREE a set of pillow cases any size and color. All the buyer needs to do is text name, size/color to a phone number. I believe most people who purchase merchandise online depend on the reviews before making a decision. This vendor is "buying" 5 star reviews.