Title: Memory defective
Review: The two memory cards that I purchased did not work either because they were defective or not compatible. I contacted the vendor that sold them to me and was told that I could not return them because I had opened the package. It is hard to know if a product does not work without trying it so I believe that their return policy is wrong. I am now trying to contact the manufacturer because the package indicates a 100% guarantee. So far, no success in getting a response back.
Is this product review negative?