For those buying Transformers toys and aren't sure if it is a fake or legit figure...
1st - check out the archive links here for known Knock Offs & how to spot them,
2nd - have a quick look at the topic titles in our Knock Off section to see if an alert has recently been posted about it,
3rd - post here with your query if the first two options didn't help you out, as someone here may know or will direct you to somewhere that can help.
BE AWARE - Knock Offs are not permitted on Ebay, even if the seller says that it is (or uses the word "Reissue" on something that was not officially reissued). If you fall victim to an ebay sale that was deceptive, you can open up a dispute, as it would be "not receiving an item as described".
If the item was clearly listed as being a Knock Off, it may be more difficult to open a dispute, so contact the seller first to resolve the problem before escalating it.