C = How much you should charge.

A) How much would you work for per hour? $5? $50? $500?

B) How long will the job take?

A + B = C

If the client doesn't like or agree with "C" then teh job...

Just go to "Create" then go to the primitives of your choice (Polygon, Nurbs) and uncheck "Interactive Creation".

Or you could hold hold down "X" while drawing your object to keep it aligned to...