.Mac for $20 off?

cowm007 let us know that he found that Amazon is offering the "old" version of .Mac for almost $20 off, while the "new" version of .Mac is about $5 off.

Since the .Mac box simply contains a pre-paid activation code for one year of .Mac service, it seems likely that the "old" version of the .Mac retail box should be the same as the new one, and cheaper.