Aiming for a conservative vanilla balance, I would do something like:
Holy Chosen - c.0
Holy Sentinel - c.500 - 1,000
Paladin - c.2,500 - 5,000
High Paladin - c.5,000 - 10,000
Inquisitor - c.10,000 - 20,000

The high end of those ranges is about what I'd price them as bounties, but I think death items should be worth considerably less because they're so much easier to carry and have the added benefit of killing downed opponents, so I'd personally go with the low end.

I might even opt to give death items to only Paladins and higher to really make it feel like a reward for taking out high-ranking soldiers. In that case, I think I'd go with the higher prices.

♥♥♥♥♥♥♥♥♥, thank you! Didn't think someone would answer so soon lmao

Those are some really good points that I was hoping to see, I'll keep the suggestions very much in mind