People are being confused by a very questionable practice. What happens is they see the new product pictured above, which is excellent, and then they see the "new and used" price that is much cheaper. They order the products from the "new and used" section and then find that what they get is not what is in the pictures - instead they get a substitute. When challenged the sellers will say that they made it clear in *their* advert that the goods were "compatible", which is true; but it is essentially a game. They are not selling the product depicted "new" and they are not selling the product depicted "used", it is a completely different product that is intended to do the same job.
This problem is all over Amazon. The sellers of the substitute goods rely on the fact that people will not bother to argue the case, instead they will just accept what they get and move on.
Amazon have a policy that ONLY the goods depicted can be sold as "new and used", but the policy is not policed. Instead, if you don't like what you get you will have to rely either on the seller to relent and refund your money or you will have to press a claim through Amazon. I have done both of these in my time and sure, you get your money back one way or the other, but you will never get back the wasted time.
In this review I am not saying the substitute product is not good, it may be good, it is just NOT THE PRODUCT ADVERTISED on this page. Watch for this, it is becoming commonplace on Amazon. Observe the seller ratings and then see *why* they are low.
Regards
Adrian