You can now let members offer or trade on your post/ads.
You'll see the check box when you make a post/ad, and the offers you have in your dashboard.
Will show top 3 offers on post/ad, you can accept or decline offers and block members from making any more offers.
Offers can be money or trade items.
Members can test the offer button on this post and see the results back in your dashboard
Read about privacy settings