How to quote (create a proposal) for a Rails project?

Hi, I have been working on some Rails projects on my own and recently mustered the courage to venture into creating Rails apps for paying customers.

I have gathered the requirements, prepared necessary use cases and have a general idea of what it would take to put a Rails app together for this specific project.

Can anyone help with some best practices for quoting a Rails app to a customer? What all needs to be taken into consideration and how much time would go into individual parts building an app? How does Thoughtbot go about creating and presenting proposals for their Rails customers?

You can read the thoughtbot book. They explain every thing there and also the videos by Chad Pytel.

Here’s a link to the relevant section of the playbook: Playbook for software design and development - By thoughtbot

Thanks!! I’ll check it out right away.