Re "justifiable": I recommend looking at that from the point of view of your former employer and potential client. To them the value of the work you would do could be many times your hourly rate, so the difference between $70 and $100 is negligible. Since you were formerly employed by them, you should have some insight.

As an extreme example, my first job after university was as a process engineer with a large manufacturing company. They had a production line that ran 3 shifts (24/7) with the value of line time about $10,000 per hour.

One day they'd been running for about half a shift and all the product was failing in QC. The shift supervisor, production manager, and my immediate boss were all at the end of the line, scratching their heads, trying to figure out what was wrong.

My area of responsibility and knowledge was the start of the line, I knew nothing about the end of the line and packaging processes. I went to see my boss about some other matter. I wondered why everyone was at the end of the line and they explained what was happening. With "fresh eyes" on the problem I had a flash of insight. Based on that we made a "crazy" adjustment to the line configuration, and within 5 minutes the product was passing QC with flying colours.

Looking back on it now, those 5 minutes paid my salary for the entire year.

In your case, whatever rate you propose, as one of the factors they will (or should) evaluate it on the basis of ROI.

>Hello Dmitry,
>
>So far I've never seen a director that evaluated precisely how many hours it would take to complete an assigment.
>
>During development there are always surprises ;-)
>
>I understand what you mean with doubling what I will be asking for. That would be logic if I got around 35$ in the past. But hardly justifiable if it was 50$ per hour for example.
>
>Regards
>
>
>>Hi Denis,
>>
>>Many people here gave you a good advice. My input is as follows:
>>Whatever number you have in mind, double it. Then start negotiating from the higher number.
>>Another thing to keep in mind is, if you will be paid 40 hours a week regardless of what you do. Or they will give you an assignment and tell you how many hours. This makes a difference since often time (at least in my case), you may spend more hours on a "project/assignment" than they pay you. You have to account for it.
>>HTH.
>>
>>>Hello all,
>>>
>>>I've ben offered a consultant job with VFP.
>>>
>>>Considering that the demand is much higher than the offer how much per hour am I worth?
>>>
>>>Also considering that I used to work there for almost 2 years, so training should be minimal.
>>>
>>>I have a number in my head but I'd like to have your feedback.
>>>
>>>Regards