When clients ask me about pricing. If I feel it's right to say with them based on what I know about them I say that I go by the classic business model of you can have GOOD, FAST or CHEAP and the client can only PICK TWO of those. I even say this on my process page of my main site.
I always knew of this concept but I recently discovered a that it has a name and other version of it. It called Project Triangle according to our helpful yet unreliable source of Wikipedia.
There are others project triangles listed here that I think are generally true.
College: Work, Sleep, Play – Pick two.
Men: Handsome, High-Earner, Faithful – Pick two.
Women: Single, Sane, Sexy, Smart – Pick any three.…