For 10 years I used a detangler for $26.99 (after discount) plus shipping for a 32 ounce bottle, which lasted a long time since I only get my hair washed at the salon once every two weeks.
I stopped using it 4 years ago, and now I only pay $6.63 for Infusium 23 (Repairology 32 ounces). It does a better job.