Searching for CD

Perhaps one of our more musically inclined readership can help me. I'd like to acquire the following on CD:

Alessandro Scarlatti: Messa di Sancta Cecilia by the choir of St. Mary the Virgin, New York. MHC 6076K (Musical Heritage Society).

I might have found one instance of this on eBay, but if anyone else has a copy they'd be willing to part with, or knows of where I might get it, I would be grateful.