I'd like to start a similar site, but where people start a project (MVP) and we add dev steps that they can fund one step at a time (i.e. in $250-500 chunks). i

I'd like to start a similar site, but where people start a project (MVP) and we add dev steps that they can fund one step at a time (i.e. in $250-500 chunks). initial consult fee is $200 to lay out the general budget and tasks to get to 100%.