Undercut Protection intercepts auction postings and warns you before you accidentally sell an item far below the current lowest price. When you click "Post", the addon compares your entered price against the lowest listed price in the auction house. If the difference exceeds your configured threshold, a confirmation dialog appears showing your price, the current lowest price, and the percentage difference. You can then either confirm the posting or cancel it.

It also detects possible price manipulation: by default, if the cheapest price level contains only 1 item and there is a suspiciously large gap to the next price level, you will be warned if you try to post at or below that suspicious low price. The quantity limit is configurable.

If needed you can make special rules for single items or whole categories in the options menu.

The addon works with the default Blizzard auction house UI and Auctionator.

Slash commands:

/unproptions - Opens the options menu.

/unprtoggle - Enables or disables the addon.

/unprperc value - Sets the undercut threshold in percent (default: 20%).

/unprmantoggle - Enables or disables manipulation detection for the 1 item trick.

/unprman value - Sets the manipulation detection threshold in percent (default: 20%).

/unprmancount value - Sets the max item count for manipulation detection (default: 1).

I've set up a small Discord Server for my addons https://discord.gg/j3vQVnWUYv Feel free to use it if you have any problems, suggestions or just a simple feedback - I am grateful for everything!