I see it as a marketing ploy - tell people there has been a sell-out (because you've actually got too little stock) and they will be clamouring for it when you get more stock in. Or am I just being cynical ;)
You may well be correct, though I struggle to get my head around people clamouring for Stephanie's products (unless her style has changed dramatically since I last watched C&C)!
Clamour they do. There seems to be a big kit every week or so and they always sell, apart from a few items that then turn up in sales for ever more. She has a large staff to support so well done her.