Question from a beginner (traffic purchase)

Hi,

pretty sure somebody of you can help me, i am new to IM and have a question.

I browsed some IM related eBay auctions where one guy is offering website traffic (10k, 20k visitors and so on).
He says that all of them are real people and they have to stay 30-40sec on the website.

Are those really real people? And if they are real, how he makes sure they stay on the page for a certain time???

Realy curious about this...

Thanks in advance!