David Airey's is a designer who has very useful information on his blog. His latest post discusses 15 pieces of advice for designers who want or are in the self-employment biz. I personally like the fourth rule and even though I've been designing for a couple years, pricing still seems to be tricky at times. Here are couple of his advice.
1. Look at the big picture
2. Tell your friends and family about your self-employment
You never know what contacts they might have. Those close to you will want to help.
3. You will lose potential clients because your pricing is too high
But also because it’s too low. Whether you like it or not, the rates you set will immediately give others a perception about the quality of your design work.
4. Don’t stress about pricing
Design pricing is something independent graphic designers struggle with at some point. The best way to learn is through experience, and remember, you can always negotiate your price down from your initial quote, but never up, so if in doubt aim high.