Almost all IT people (In fact almost all people in any industry) will tell you a good salary for the industry is "more than I'm getting".
Bottom line is if you think what you are offered is fair, take it (ie would you do the work they want for that price).
Often advertised positions will have prices attached, and you can compare to these (as I think someone already said).
You can always look for a new position (and while employed are earning valuable experience - one of the deciding factors in salary, I think).....Money is not always what makes a job worth while (although it's nice), and even if it were, there is no harm taking a lesser paid job to gain experience for the better paid job. As you work in the industry you will often hear/overhear what others are getting, and if you're not happy with your package, don't be afraid to either approach management or look to move on (if people value your work and fear you will move on, you may find them willing to increase salary, provided they think it's worth it)
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