I bought this product (from this seller) just over a year ago as a replacement for my handycam. Was impressed with the price.
I've used this a handful of times, and I just plugged it in and it went pop. Fortunately I hadn't plugged it into the camera yet, but when I did, it caused the thing to power off - not a good sign. I'm just glad it didn't pop while plugged into the camera - some people have said that the cheap replacement adaptors have damaged their cameras.
I won't be cutting corners again. For the sake of []odd quid, I'm not risking it again and I'm getting the Sony branded one.
My advice - avoid these cheaper alternatives.