Read thru the whole thread, amazing... Any Honda dealership can make you keys for any Honda regardless of how old... Any Real locksmith can do the same... Both can do it with or without having a key by using the code... all in my area seem to be about half what was paid ($10 roughly)...
There was just a recent thread about this very subject, try using the search feature to find it. The basic gist was there are numbers for the keys and you could possibly get a key made from just the number. Don't know your particular situation though.
An auto locksmith can charge what the local market will bear. How reasonable are their rates depends on how much you need the key.
IIRC I had one cut by my local locksmith for something in the range of $10.00 including the blank.