I feel that sacrificing your own life doesn't really count. If anything, it has to be something that you kill or sacrifice someone else's life for; but the other person's life has to count as a sacred value. It's not clear that outgroup people's lives count as sacred. On the other hand, maybe sending people to war counts as trading the sacred value of life - for what exactly, though?

Legal liberty and equality are a bit hard to actually trade; to the extent that equality is traded, though, it is very routinely exchanged for what one should think are lowest-tier goods, no?

On the other hand, I'm not sure were this leaves. Maybe this mess is just the usual humans not having a proper utility function and has nothing to do with tiers of increasing sacredness in particular.