Would just like to say something.
I am not a graphic designer by any means (lol!!)
However from a buisness perspective I can tell you that you are apporach to pricing is a little off.
If you are confident in your ability, then you really need to charge a lot more for anything you might sell to a buisness. As long as your work is of decent quality that is!!
Logo's are the most extreme example. A logo represents the company and therefore most companies will look to invest a little bit extra into what is effectively their signature. Offering logo's for $5 no matter what the standard, gives the wrong impression to those who are looking for a professional/quality logo.
Don't get me wrong, some will be happy to purchase for $5 (and get good value for money lol!!), but why bother when there are those out there looking to throw cash at a logo to represent their buisness?