I'm a UX Designer, based in Ukraine. I have experience with marketing strategy and developing customer experience. Recently I've got a commission on brand development. The client is not a corporation, but small local store/cafe/gym for cyclists. I have to come up with the creative brief, brand positioning, naming, branding and it's visual identity and afterward, guide the client through a decision-making process. Trademark checking is not included, just URL and Facebook checking. I guess I will need 30 days of work (4-5 hours a day), something about 120-150 hours. What will you recommend to choose: hourly rate or fixed price? Ordinarily, my rate for UX work is $14/hour. But branding and naming are not usual fields for me. Thank's for any advice!
A good rule of thumb is to go with hourly for large commercial projects and for large organizations (or combination of fix and hourly after certain threshold) while a fix flat rate accepted upfront for small businesses and startups.
You can calculate a decent (non-exagerated) hourly rate as if you were an employee somewhere doing that work and then add a multple of 1.5 or something for your business profit and charge that hour multiple as a flat fee for the project.
My name is Humberto Valle, I'm the co-founder of Unthink Digital Marketing - if you have a link with samples I'd really love to see your work. :)