I recently went through something similar with a family member I didn't want to get into a business relationship with (half sister). In my case the requirements

I recently went through something similar with a family member I didn't want to get into a business relationship with (half sister). In my case the requirements were much simpler, but also much more vague, and detailed questions were met with "I don't know what data rate, resolution, capabilities, data... I need." I decided that the best answer to this was to quote high ($5k), and recommend that she look at elance.com where someone will likely be willing to do the job for less. If you think it will be a fun project then go for it. In many cases I would even do free night/weekend work for family, but if you are feeling hesitant then this might be one to steer clear from.