I have a used 455 and 455CS for sale. I have come across it from a friend whose business doesn't need it anymore. It was used for stock market updates for a bank.
To be honest I know nothing about it so there is potential for a bargain. I'm located in Sydney Australia but are willing to post at your expense.

Feel free to make an offer or I'm even open to feedback as to what its worth too.

Contact me at [email protected] if you want some more info or photos.

Thanks for looking.