I'm a Lush fan.... I love the stuff. I love my stuff too... hell I just love getting clean!! I could sleep in their shop if was allowed. Soapers love to knock Lush I don't understand why. It smells devine, looks visually AMAZING, and feels fine to me. Is it over priced? probably, but hey it helps to lift the price of CP soap if you ask me. So thats a good thing.
As PP said there are many products that have been duped. Their solid bubble bath has been brain stormed to death and recipes available on various forums. Solid shampoo is another. Watch their youtube lushvids. They actually show how they make some of their products. Its an interesting watch.
Keep in mind always that alot of their recipes/formulas are patented. I don't think it hurts to make a few things for yourself but to outright use their formula & sell is asking for trouble. I don't agree with them being able to patent such formulas, in fact its a crime in itself, but hey, money talks right.