I just picked up an Orion 8 inch f 4.4 with a Vixen clone mount (no drives) and a whopping big focussing unit for $250 at CASH CONVERTORS!!
After carefully cleaning a lot(a lot!!!) of dust of the optics, I have perfect condition primary and secondary mirrors..........not a mark on them.
The scope is one from quite a few years back, but shows very solid construction, pyrex glass etc.
I never knew what ''fast optics '' meant until I stuck my eye up to this thing in daylight .