Spain Train Passes

From Eurorail, we can do the saver package for Spain-Portugal if we always travel together (I assume we will) for $291 for 3 days up to $563 for 10 days. They don't seem to offer 2nd Class Passes.

We would have to add reservations, especially the sleeper car to Lisbon, on to that.

The first class passes for just Spain appear to be more expensive, which is certainly odd. I don't see the Group Saver option, perhaps that's only valid for more than one country.