I spend $40-$45 on Maddie's cuts.  I have an excellent groomer though so I don't mind.  I usually trim her up myself, but each summer we get a shorter cut.
 
I know some have had good experiences at PetSmart groomers, but ours was HORRIBLE!  I still think she was given something.  She was very lethargic for a day or two after.  I was also chewed out b/c she was considered 'difficult'.  She only weighed 5-6 lbs at the time.   
I hope you learn do groom yourself or find one you trust.

