I don't think my salary would be of any help for you as things are quite differents here in France(Salary mainly based on diploma rather than on skills,lower salary in general,strong geographical influence(higher in paris)...)

But I'd like to warn you about letting the boss tell you what your're worth :
It's a bad thing, especially if it's a manager or a commercial (beccause their interest is to get you at the lowest price...)

You should rather evaluate your price (looking for the salary of people with similar skills) and learn to 'sell' your strength and turn your weaknesses into advantage
(Never say: 'not so well organised' say 'creative'
Never say: 'young and not much experienced' say 'I'm learning quickly'
An NEVER NEVER say 'Money isn't so important for me' ,even if it's true !)

Understand me, it's not about lying or playing on words, but when you have to talk with a commercial/manager use the manager/commercial rules (get as much as you can, usually half what you deserve)
Furthermore I REALLY think all our weaknesses induce strengths (I'm lazy so I'm a good perl programmer ;-) and you have to always remember this...

As a last note, I have to warn you :
They'll fool you more than once, but never make the same mistake twice, and learn their tactics/jargon/way to think, beccause it's the (only?) way to reach a decent salary...