In our reports, notably on the surface combatants, we looked at alternative designs, not necessarily different ways of procuring the ships, but different designs that were not identical but were comparable and were deemed comparable by other navies across the world.
We found that there are other designs that would be cheaper, with smaller ships or ships of slightly different designs, and there are alternatives to the Canadian surface combatant, which we mentioned in our report on that project. Off the top of my head, I don't remember all the details.