Camry LE V6- 138k miles a/c just quit cooling -blower runs fine from all vents

thanks-I just came from the dealer,who ckd it (for $140). Said the freon was low, but he couldn't find a leak, so put in dye and said to come back in a week to see if leak evident, or...if it doesn't stop cooling again, consider it fixed. The freon was $16 of the total bill. Labor (1hour)was $100. Thats outrageous! Could I have gotten it checked cheaper somewhere/anywhere else???

THATS NOT THAT BAD I WOULD CHARGE 130.00. LOOK AT THE MONEY U SAVED BY NOT GUESSING.HOPE THAT MAKES YOU FEEL BETTER. SORRY