over 1 1 millionon young people. that's a huge freaking number. reporter: khadija hamouchi's parents are from morocco. she was born in belgium and has lived in london and berlin. at the moment, she's in san francisco, where she's working in a statart-up incubator. her aim is to produce an app that provides information in arabic on how to set up a business, helping to kickstart fledgling enterprises in the region. she believes there's a gap in the market for business knowledge of this kind. >> when you speak about education of young people, people say, "oh, is it a programme to deradicalize youth?" there is that still strong prejudical assumption that people think everyone, because they are arabs, muslims, are at risk of becoming terrorists. as if 375 million young people were ready to be radicalized simply because they are arabs. reporter: khadija hamouchi is lucky. she's had the chance to visit start-up workshops, make contacts, and try things out. many young people in the arab world don't have that privilege. those who do go to university, often

theou do guesstimates from 99 dollars annual fee for p rime, it seems like that has to 70 millionon customersbally. we don't really know, but there has been estimates over the years. cory: that is just the membership. that does not show you how much prime members are spending. they go through the trouble to get prime members, we expect those people would spend more, w other than kno surveys. >> this just raises more questions than it answers. and we don't know the value of a prime shopper versus a nonprime shopper. can we don't know how much those people cost amazon. 2 day shipping is not free. cory: they give us shipping losses every quarter and annually. but we also know the return rate. we don't know how long people stay with that business. that $6 billion, about 4% of revenues. peoplet know how money -- how much money people are paying every year. >> the only people know her inside of amazon. we are not going to get a glimpse of that. saidhave sent pr -- have prime is one of the three pillars of their business. cory: we have a chart on shipping costs right there. >> as a percentage of rev