Hyperstar for Celestron EdgeHD 800. Comes with Storm case and adapter for QHY8Pro. Other adapters available from Starizona. The Hyperstar converts the F10 EdgeHD into an F2 system for deep sky astrophotography. The new price is around $1200 plus shipping.
Asking $650 plus shipping at buyers expense or pick up in Melbourne area.
https://starizona.com/acb/hyperstar/whatis.aspx