I replied to a few posts but I never got any responses?
Remember to check your junk or spam mail folders as responses can sometimes end up there by accident.
Other times, you won't receive responses because people forget to mark their offers as taken. This causes their offers to stay on the group when they should have been removed. To help prevent this, posts are automatically removed from the listings after 30 days.
This can also happen when someone posts a popular item that causes them to get a lot of replies. Rather than reply to everyone, people often only reply to the person they choose to gift the item to.
And a lot of posts get claimed within a few hours or days of being posted. So you're more likely to get a response if you reply soon after a post is published.