Maybe check around in your neighborhood/community and see if you can either buy a used set for cheap, or better yet, see if you can find someone who would lend it to you to copy?
I say this because I borrowed the materials from a friend who was going to sell hers, and just burned the CDs onto my iTunes and photocopied the parts of the workbook that I thought I would use...there are definitely some sections in the workbook that I didn't really think I needed so I skipped those (the parts on nutrition, breastfeeding, etc.) Anyway, it worked out really well because now I have the materials for free and she still has the set to sell it.
I wish I could listen to the scripts when I'm commuting to work on the subway in the morning.

This morning I got really dizzy all of a sudden on the train, (this has been happening to me every now and then during this pregnancy), and even after the dizziness passed, I felt totally shaky and anxious for the rest of the morning. I'm at work now and finally starting to feel better, but I was wishing I could just close my eyes and zone out to one of the tracks-I'm sure it would have made me feel better right away. Has anyone found a good time/place to listen other than in bed or on the couch at night?