How do I join the Group Buy? Sue April 21, 2018 11:21 Updated Follow Anyone can order Group Buy items. No joining required. For smaller quantities or to save on shipping, find a buying club, co-op, or group in your area, visit the Group Buy Forum. Related articles How does Group Buy work? What products are available in the Group Buy? How do I join or start a co-op? Will I be charged sales tax? Do I have to be in a buying club? Comments 0 comments Please sign in to leave a comment.