If you cast a few C3's in POK you will have plenty of pp to buy stacks of peridots. Also when peridots drop, they don't go to cleric automaticly now.
The guild lobby basicly took away 1/2 of the cleric's pp making job (rezzing), they rarely are paid for a rezz in GL since they are being asked to run 4 zones away and venture deep into a hostile zone. It also took away the need for necro and SK to summon a corpse so they don't make pp any more. The POP stones practicly made druid and wiz pp dry up except for a few zones, but prior to POP they made good pp as taxies.
So only the enc has not lost any pp many ability, and now even has C6 added to their bag of tricks. I would not complain about a peridot. Don't cast the spell if you think it is that expensive or make the recipeant give you one, like some clerics use to for V. Plus there are still some reagent conserve items out there to make a save that it will be used. The prices in the bazar have gone crazy, if you sell a muramite rune you don't need for 5K that is 416 peridots, and with a reagent conserve you probably would get 500-600 peridots, plus the ones that drop. That should keep you well supplied even if you didn't want to cast C3 in POK.