What?? They want money? That is rediculous! I actually used to own a 1992 Honda Accord and also needed the radio code because I disconnected the battery. I went to my dealership (Honda House, hondahousemn.com), presented the VIN and serial number. After proof of ownership, they looked up the code and wrote it down for me free of charge. If possible, I would try going to a different dealership. Maybe even calling a different dealership would work. Unfortunately, Honda dealerships are the only place for Honda radio codes.
It MAY be written down somewhere in the manual.
It MAY be written down and hidden somewhere in your glove box.
You could MAYBE try going to a repair shop such as AutoZone or Strauss and ask them if they have access to such things.
ALSO, please visit http://www.radio-code.com/Honda-Pay-Page-radio-code-NEW-proced.htm
for more information about the Honda radio code.
I hope this helps!!!