im sure this is a common thing with the lack of regulations in china, but i was recently bitten by a chinese supplier who was selling bogus products. word to the wise, if it seems too cheap, it is. make sure that the authentic product is actually made in china. as in my situation, sure earphones are made in mexico, not china. the earphones i ordered seemed a bit cheap, but i went for it anyhow, i just kept it to a small order. upon receipt, i listed them on eBay, and as soon as i did i received an email from a guy who sent me to a tutorial on how to spot fake sure earphones, and as you may have deduced... they were bogus.
keep your eyes out.