Well done young stranger!
I assume you mean CD's specifically? Or is there more?
I completed my Gord "vinyl hunt" in Dec. 2002 (except Gords Gold 2) which I finally found last year about this time.
I have "most" of his albums on CD but I think I still need "Summer Side Of Life",
"Don Quixote","Shadows" & "Salute" in that format.
Not holding my breath about finding "cassettes".