They are not sure how much to charge as a new freelancer
Create a dynamic calculator, especially for new freelancer who are afraid to charge too much
Can I make this?
Yes, very quickly
Who's the target audience?
People who are new to freelancing and thinking about freelancing
Are people currently spending money on it?
No, but some sort of creative revenue model may exist (penalty cost?)
How will I get the first 25/250 customers?
Blog, twitter, freelance communities, other financial independent communities
Will it be sustainable?
Am I the person to build this business?