Congratulations and welcome to the exciting world of working for yourself. Putting a price on your services is one of the biggest challenges freelancers face. You don't want to set your rate so low that your business won't thrive, and it'll be hard to raise rates later when your business becomes more established, but you also don't want to set them so high you scare off clients. Here's some advice on establishing what to charge. Whip out a pencil and paper, because we're going to be doing some math.
Via Martin Gysler