I think the lesson here is quantity does not rule over quality when it comes to designing applications in todays market.
Like people have said, its a mature market place now, only higher quality games and apps are accepted by consumers and hence bought.
Your games took you a couple of weeks to knock together each, perhaps you should just make 1 superior application, get a graphic designer and do it right from the beginning.
Hell 99c can get you street fighter 4, NBA Jam, jetpack joyride, angry birds or fully 3D developed games etc.
You expect people to buy your games over these?
They won't.
Seriously it looks like 8bit atari style games when I was a kid, but not in a vintage good way either.
To make a good game, you need either a team, or be multitalented in all areas, including graphics design. If you lack skills, you need to hire people. You need to invest money into software packages into people, into great original ideas.
What about marketing?
Even GOOD applications need marketing plans, did you implement any? Did you do any research?
MANY great games can fall behind in iCracks of iTunes because they failed to implement any marketing strategy.
IMO the biggest downside of the app-store is its searchibility and retainability for applications, it annoys me when great games seriously just "Vanish" because people are still talking and buying viral garbage pop-releases such as angry birds.
Its an uphill battle to develop something thats successful.
Key points:
1. Make a GOOD solid, somewhat original and beautiful game.
2. Market your game properly and implement plans.
3. Respond to feedback, improve your skills and grow as a dev.
