My guess -- and it's only a guess -- is that that code they list is the error. As you say, those other titles are clearly labeled as CD-Rs, and the Amazon disc is a pressed CD. I have to imagine they've simply purchased the discs from Amazon and are reselling them at a profit.
CD-R? Where did you get that info?? In screen archives says nothing of being a CD-R
The day I posted that, SAE actually had it specifically listed as a CD-R, in addition to the catalogue number including CDR in it. They've since changed their listing.
FWIW, Jim Svejda apparently didn't have any difficulty finding it on KUSC FM last night, while interviewing the composer. Of course, I suppose it could have been a CD-R...