For context, this is a cured zombie villager.
After trading pumpkins, the trade went up from 1 pumpkin for 1 emerald to 3 pumpkins for 1 emerald. After trading again, the price went up again, but this time it was more than the standard 6. I have never hit this villager, and all of his other trades have remained at the reduced price. Furthermore, I have traded for golden carrots multiple times, and their price has remained constant, while the pumpkins have not.
Thank you for your report!
We're actually already tracking this issue in MC-146373, so I resolved and linked this ticket as a duplicate.
However, that ticket has already been resolved. That means that this is not considered a bug and won't be fixed. Please do not leave a comment on the linked ticket.
If you haven't already, you might like to make use of the search feature in the future to see if the issue has already been reported.
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