There are cautionary articles, guides on eBay, websites such as SOSFAKEFLASH.com, and Bright Hub posts and articles such as Is
There Really a 128 GB USB Flash Drive Out There? They are all meant to keep consumers from falling prey to the unscrupulous sellers who take USB flash drives with little memory- sometimes as little as 256MB- and hack the controller so it appears they have 16GB, 64GB, or even the until recently mythical 128GB capacity.
picture courtesy of mtlin from photo displayed on Flickr
Whether you are contemplating importing a bulk order of inexpensive drives directly from China, or want to bid on one from eBay, do your research. As of June 20th, 2009, there were a number of sellers on the site madeinchina who were offering obvious fakes 128GB drives. If they are selling obvious counterfeit goods of one sort, be wary of the other products they carry as well.
SOSFAKEFLASH.com puts out regular warning lists of sellers of faked drives, particularly for sellers on eBay.
However, many of these guides, especially the eBay guides, concentrate on identifying the fake after you have purchased it. This article will try to help you identify drives you should not buy, saving you grief, money, and the possibility of lost data.