We have fancy technology called logs. I changed the prices, then took a copy of the logs. Parsed the logs to narrow down the account names and the amount to refund.

I then processed 1800~ partial refunds which amounted to about 330k candies.

I made a mistake in the first set of refunds, I meant to refund 375 instead of 350 for the hat bag so some people received a second smaller refund.

The witch hut will still remain up for a few days at least, will have to add a reward for the givers in that time.