GIT mentioned that some are re-boxing items and selling them as factory sealed new items.
Yep, they have been doing it for a few years now
Rockwell is cracking down on Asia and the way they can find out who is selling them is by the serial number... so the distributors in Asia being really smart (
not) figured out if they alter the serial number the products can not be traced back to them and they are in the clear, but a simple check in RSLinx will show the serial number on most parts, this is one of the reasons I am getting out of the business
Also as Ken stated they are not fake or black market, they are gray market and being sold from un-authorized markets
In the box are the real products and they work just fine but Rockwell will void any warranty that they offer... the bad part for Rockwell is they make a good product and they dont fail very often so most people take the chance and save the money, I offer my own warranty
Its also not just on ebay, its just about any on line seller, RA does not want their products sold on line because they cant control where or to whom the product is sold to (but thats a different conversation), more reading here
https://www.plctalk.net/qanda/showthread.php?t=131227
Not just AB I have been seeing Siemens, Omron and others also.
This the best one I have seen...