For Blue server? Personally, I throw all mine away as the Hoenn digsites have essentially destroyed the prices of so many items now - which isn't too terrible as quite a few included in the list were far overpriced, anyways. So,
As for a dawn stone, you'd be lucky to snag 10k out of it. Find someone who needs it ASAP, expect a whopping 20k. Razor claws had a value when the supply was low and the demand was sorta there. They're pretty much worthless rn unless again, there's a ninjask or weavile in dire need. Finally, as for the powder, not entirely sure as it isn't traded commonly within the channel. Maybe get a few offers from the public in it and take the average.
Have fun.