What should you pay for A/C Units???From A/C Contractors

Well Ryan the return increases with how much braking down you do,I clean all my coils clean coils should be 10-15 cents more a pound then dirty,avg 3 ton unit 28 lbs coils here clean coils are 1.65 a pound,the compressor avg 70 lbs .34 a lb electric motor avg 18 lbs .36 a lb if sold hole we hold the motors to after Christmas when the a/c slow down avg 2 lbs copper #2 1, lb cast aluminum 11 lbs shread,copper lines avg 3 lbs,#2?copper,2lbs #2wire 80 lbs shread,avg return3ton unit 125.00