uuuugh!! i said i wasnt going to do this, but here goes:
that, how do you know that decreasing the rate "slightly" will double the amount of business?
(in your example, going from 5($150) clients to 10 ($120))
this merely isnt a fair "example"...
if ANY business lowers their rate\fee, whatever, YES they "may" attract more customers. however, what happens when you hit a point, that there is no profit (after you factor in expenses, more time spent to screen, chat with, etc with clients)
Now if you can show myself, or any others how to maximize profit AFTER expenses etc...id definately be interested. but until then, i dont think its a good business idea, to take direct pricing advice from an individual that has something to gain. buuuut thats just how my lil ol brain works
you sir, have your good deed for the day, if your only intent was to vaguely educate us on how to price our time

(theres way more i wamna say, but working on that)

thatis all.