RIGOL DSA 815 EMI code upgrade

Hi I have an unused 'upgrade' RIGOL DSA 800 Options and Accessories EMI Filter and Quasi - Peak Detector DSA800 - EMI option provides Quasi-Peak detector and EMI filter (200Hz,9kHz,120kHz,-6 dB bandwidth).
Retails for about $650

Any reasonable offer.

The item is a paper certificate.

Useful for CISPRE/IEC/FCC type EMI measurements if one does not know how to do this with PC calculations by moving averages for each setting.

Yes,
the code on the certificate is used along with the DSA s/n to produce a software key to unlock the feature in the DSA.

BUMP