POP the question? Command higher fees.
Now I was going to go in at the $500 level (to start with) PM but knowing what I now know the client can afford $1000+ PM with added services I can provide to justify and over deliver in value of course. But just look how one key question can prevent you from under cutting yourself for your services or the benefit you can provide to a client. Remember your the expert so should be the one who is advising them as they are under your guidance and care. (wikipedia the word "CLIENT").
If say for example i only offered half the package but the business could afford and really required more profit boosting services from my self, how would I have known with out opening my mouth and asking, conversant, discussing and analysing?
If you are just selling one thing one off or one service on a retainer, start asking more questions to your Clients to see what else you can provide for them. Forget you for a second you could actually be doing them a bad service by not providing them with a more fuller service.
If your looking for fast success with low failure get a coach/consultation, DM for skyp bookings.