Thanks to all that helped. Following jbarhorst2's post I was able to confirm that the 97 SC400 did not have the remote on the key and so only the remote key fob was needed. My dealer said he was more than happy to oblige at $199 for the fob and $99 to program it. Right!
Couldn't find anything on ebay, but did find keylessride online for $69. New Lexus keyfob remote with programming. And yes RedRocket "life is much cheaper if you don't have the integrated remote and key".
thanks all