How safe is it to buy off Chinese sellers on ebay?

I've never ordered from China before as I normally can find the item elsewhere for a similar price. I've looked up the items I'm after (Hasbro Deluxe DOTM Soundwave (I'm going SW completest) and Encore Cassettes 17) and haven't found any warnings about them being KOed, at least in legit colours, size and packaging.

I'm just wary because of the amount KO's that come out of China.