On my MB web page (Menu #1; toward bottom of the page), I have a link to get the Alldata (AutoZone) CDROM
However, after checking it today, I find it's gone! And replaced by a $24.95/yr subcription. Wow!
Here's link as it looks today: http://www.alldata.com/products/index.html
There's an Alldata DVD available but no price mentioned. I'll bet it's steep!