Ok, first off, I want to propose the suggestion that players have the option to BLOCK others from reviving them through energy. Reviving through health splitting still possible.
Some may understand why already but to clarify, it can actually be worse to do this to someone. As the blunt example, I got a paid for revive by someone and then died twice later on.
As far as the maths goes, he revived me once, and i revived myself twice. He paid the 5 CE fee whereas I paid the 10 and 20CE fees after...
Cost to him, 5 CE, cost to me, 30!
If he had just revived himself instead (he revived me, and not himself) he'd have paid 5CE, I'd only pay the 5 and 10 CE.
Cost to him, 5 CE, cost to me, 15...
I realize that I got the choice at the time to pay for revival and i have no problems under the circumstances above to do so. but it should be MY choice to pay for revival, not someone else's. It's a remarkable dick move to throw a revive someone else's way when your party's dead so that when you recover, their costs are up and yours are unaffected.
The bit that bites me really is that explain it to them, because the game omits the information about bumping their costs up. As such they think they are doing you a favor and when you get pissed off, they wonder what for.
Yes, you are probably worse off if they pay to revive you than if they pay to revive themselves and then rescue you. But that's like complaining that someone gave you a free 5 energy when they could have given you 20. You're still better off than if they had left you dead and you were forced to revive yourself.
In my experience, this usually means that the other person has revived themselves twice before you joined, and they're reviving you because it's a lot cheaper than reviving themselves yet again.
Now, maybe there's some problem with griefers maliciously spending energy to revive someone who died when the rest of the party is already up and in good health, in the hopes of inconveniencing them later. In which case, you should definitely submit a complaint about that player. But I've never seen anything like that.
If I were leading a party that had been wiped and I tried to revive you with energy, and you REFUSED to keep your revive costs down, that would not make me rescue you instead, it would make me kick you from the group while you were still dead. Then you could ponder the question of whether my revive offer was in your best interests or not.