-200 is around 200-250k, -600 600-690k. With the -99 I can't help, it is a rarity here, but you might buy a Shadow Pestle for 55k from msv's tent (if she has one at the moment, or didn't change the price). Others charge 60-65k for a Shadow Pestle.

Edit: Okay, I checked her tent, the Pestle is 50k now.