Is this a good idea?

Hi guys, whats going on? I have been thinking of a way to make a little extra cash lately, and I think I have an idea. I can make high quality scenery addons, with custom buildings and photo scenery, corrected airport, ect. , and sell it. I know what your thinking, "that's called payware dummy!". But the catch in that plan is that I could sell it for only one dollar. I can integrate it right into a Blogger.com blog using Google Checkout. I was also thinking about having the option to have a airport personally designed for someone for say, five dollars, or even less. I know it sounds kind of foolish, but if I advertise it on YouTube, here, and other sim websites, I think I may be able to get even a little bit of money. Even if I only got 50 downloads per week off of the entire website, that's still 50 bucks more than I am making now!
(I'm a freshman in high school, ei. young) Thanks ahead of time for your opinions! You don't have to right a novel either, just say good idea or bad idea.
