I used to work for one of the inbound telemarketing companies that took calls for a lot of those infomercials. (the telemarketing place wasnt the company that produced those infomercials, it was just the people they hired to take the orders)

You would be amazed at how gullible some people are...or at least amazed at how people dont listen and shocked at how many people will say yes to anything as long as you say "free 30 day trial" while reading the up-sell script. (required to be read...if I had the choice, I wouldnt have)

I took orders for most of that infomercial crap, and I also did credit card applications. (oh, dont get me started on the people calling for the credit cards...these people probably couldnt even get a subprime loan and should not have been getting credit cards)