A few months ago we reported that counterfeit BenQ and Plextor DVD burners were found on the Chinese market. Sony doesn't seem to be immune to counterfeiting either. According to DigiTimes, counterfeit versions of the Sony DW-G120A were recently found in Beijing.
Counterfeit versions of Sony's DW-G120A, a 16x Super Multi DVD burner, have been found in Beijing, according to industry sources in Taiwan. In response, Sony Taiwan indicated that no such knockoffs of Sony DVD burners have been found in the Taiwan market.

LiFU is the China sales agent for Sony optical storage product lines, the sources indicated. Samsung, BenQ and Asus, the top three brands for DVD burners in the China market, are concerned about the news, the sources pointed out.
It's unlikely that these counterfeit drives will show up in the US. However, keep it in mind in case that DVD burner on eBay seems to be too good of a deal. If you'd like to read more, the entire article can be found here.