Trade Cooldown

Addon Name : Trade Cooldown

What does it do?
This addon adds a short cooldown to the Trade button whenever any change is made in the trade window.

Example:
You check the item, confirm it’s correct, and get ready to press Trade. Suddenly, the other player removes the item and quickly accepts the trade using a macro to scam you. With this addon, the Trade button goes on cooldown after any change, giving you time to notice the modification and preventing you from clicking too quickly.
Download
You can see in this video how any change made will set the trade button in cooldown :
https://www.youtube.com/watch?v=FzFxJeVukZI

That is cool and simple.