i bought a "genuine" Samsung MicroSd card on Ali Express
When I got the package there were many spelling mistakes on the outer package. When I tried to store, I gor frequent corruption errors. reforrmating did not help.
When I complained to Ali Express I got a reply "Please be informed that the reported listing(s) is / are neither prohibited nor controlled item(s) under our Product Listing Policy."
Link to store: http://www.aliexpress.com/store/1149252