If you don’t know Mike Stewart aka the Video Guy, you might want to take a look at this video on his blog. I met Mike a couple years ago and he is a real guy who knows what he is talking about. This video starts off with Mike telling you that you gotta have a product to sell if you expect to make money. "Ain’t it the truth, ain’t it the truth" to quote a certain cowardly lion.
Mike shows how to make a Wordpress video sales page. Of course, Mike has something to sell too, but you could get some knowledge and maybe an idea you can use from watching his video without buying anything, and any time you can learn something for free, it’s worth a look.
That part about 15 minutes - well maybe you could make a video Wordpress blog in that time if (a) you are more or less familiar with Wordpress, and (b) you already have a video that you can use for a sales letter.