If you’re asking me to do work for you, you may only have 2 off the triangle.
Examples:
If you want the work Good & Cheap, don’t expect it Fast
If you want the work Good & Fast, don’t expect it Cheap
If you want the work Fast & Cheap, don’t expect it Good

This is a wonderful way of looking at commissioning any type of work, whether it’s a plumber, a web designer or a decorator.