Recently we bought three  8 megabyte USB keys from 2 different ebay sellers from Hongkong by auction style, their ebay id are wingsham468 and itchee98.  After 10 days of winning, we received the items in good order then we formatted them straight away and it seems they work perfectly. Since they look alright  we leave good feedbacks for them.  Unfortunately after putting some data on all of the usb keys, We are unable to delete or to reformat or to save data. The USB keys that we bought are actually really just A PIECE OF JUNK THAT CANNOT WORK AT ALL. 

BEWARE when buying from these seller wingsham468 and itchee98, BECAREFUL when buying don't attract to really low starting price. You think you will get a good bargain but end up with a piece of junk. 

We hope this will help someone.  Thank you