Unfortunately, this is an age-old problem. If you don't think they like your hourly rate then charge per milestone. Milestone A = $2500 Milestone B = $2500 M

Unfortunately, this is an age-old problem. If you don't think they like your hourly rate then charge per milestone. Milestone A = $2500 Milestone B = $2500 Milestone C = $2500 Milestone D = $2500 Include an exit clause for both parties after each milestone in case the project just isn't working out (i.e. you're spending way more time on it than you expected).