originals aren't always easy to find (I don't know for the note 2 specifically), but on ebay, if I try a new seller, there are a few things I look for. it isn't from china/east asia (tend to be defective and slow to arrive too), must have 99%+ positive feedback. must be tested parts, it will save you trouble. not all parts listed as oem are oem, so be wary. if you can, open up your device and look for little things on the part you want, like type of glue, or details on the cable to compare to the product you're buying, sometimes you can verify if it's original or not by those features in the picture (but it's usually hard).