trade plugin?

[surgetheurge]

Hey, so I don't want to get a trade plugin because those always lead to duplication bugs and it easily ruins the server every time. Even now, I looked up trade plugin and came across https://www.spigotmc.org/resources/trading.1203/ and apparently a week ago it had a dupe exploit in it. I always wanted to trust the players to be clever enough to not be scammed, but it just wont happen. People constantly cry to me that they are quitting because they were scammed and they want me to do item recovery for them. Anyway, does anyone know a trade plugin that has never had a dupe exploit and will not have a dupe exploit?