How To Define Airport Transfers And Rates

 
In major markets such as Los Angeles or New York, a transfer rate can run anywhere from $50 to $100, or so. But, not all markets are the same, and not all operators offer them. I recently learned the hard way and it destroyed my relationship with a fellow operator.

I recently farmed out an airport transfer to a fellow operator. This is an operator I have swapped business with many times over many years — an operator I have shared cocktails with from coast-to-coast at industry shows.
 
The job consisted of a 4:20 a.m. hotel pickup to a local airport. The ride actually concluded 20 minutes later at the airport. Imagine my surprise when my credit card was charged $265.40 for a transfer.

I sent the operator an email advising that I had charged my client $119 for the SUV transfer and lost about $146 on the job. The response I received contained words that I can't even use here. It was completely mean and hateful. Now, I have to make a decision of writing off the loss or filing a dispute with my credit card company and causing a chargeback to my affiliate. At this point, the latter seems like the direction I am leaning.  
 
Do you offer airport transfer rates? If so, how much do you charge? How should I handle this mess?