It's not Amazon that is necessarily doing this although they do have some part in it as they allowed the "Free for all" that has been going on way too long. Many manufacturers themselves are implementing this and are finally cracking down in an effort to support their real dealers. They see the need to stop people from buying clearance & discount items and selling them as new as it is hurting many products reputation. In most retail spaces in order to become an authorized dealer you must sign all kinds of agreements, maintain stock levels, support the products sold and meet minimum buy in amounts. Manufacturers in turn will support authorized dealers by providing a warranty for customers of those authorized dealers. Many of these sellers that are getting product through "shady" methods may be selling products that can potentially harm a consumer, may have been recalled or damaged. In the end it's the manufacturer that gets hit with the law suit not the seller so they are finally trying to protect themselves. Sorry to say but this is actually a good thing for consumers and authorized dealers.