My clerics spend their plat on consumables, crafting essences, and random lootgen items in the AH that replace their now semi-useless raid gear.
I also make sure every cleric has stacks of unbound remove curse potions to give out in raids with frequent curses (ToD, CitW, etc). Yes, everyone "should" have their own and "no", I'm not a NPC vendor to just dispense what people can't be bothered to carry for themselves. But curses are such a pernicious PITA that I find it more fun and relaxing and a better game if I hand someone a stack of 20 or 30 potions, rather than drag their soulstone from one side of the map to the other. It's not a huge expense but it does add up if I end up in a few back to back runs with new people.