Best examples of a "trading area"?

[trizz]

Has anyone seen any noteworthy implementations of a trading area on a xenForo forum?

Looking for something where person A can post they have an item, someone can voice interest and it ties the two users together unless one of the users decides they arent interested in a trade, and then opens/frees the item back up again.

 

[3rd AnGle]

@Mr. Goodie2Shoes is working on a classified addon .. you might wanna keep an eye on that https://xenforo.com/community/threads/working-on-a-classifieds-add-on.89552/

not sure about locking/unlocking of the item though

 

[Pavle123]

I am also looking for something that will help my members trade on my site.

Also are there any resources for buy/sale/trade that are done?