Given that money is relevant, and it's about money being used to get something great, how about playing it out more literally?
Characters starting on 30th of August will find that either the Lawenilothehl, Dwarftown, or HMV shop will contain an artifact costing 90,169 gp - it could be pushed a bit further, requiring the PC to have 90,169 experience points before it will be generated, too (alternatively, 90,169 steps could work).
The artifact could be a unique artifact, made for this particular special day, and could have a resurrection theme of some sort. I'm picturing basically an uber-AoLS in a way - can't be destroyed by normal means, restores full HP (but disappears on use) upon death, and perhaps having special benefit if used to save Khelavaster (and could be eternium rather than iron, so Mist Elves would also be able to use it). Since it would pretty much be a modified AoLS with an "artifact" flag, it should be pretty easy to implement.