I handled a co-op several years ago through Hollingsworth. It is a lot of work. I took in the money, got the order from Hollingsworth and mailed all the peonies to the participants. Ticker helped out by making a speed sheet to help me stay organized. My daughters helped pack and ship. It's a lot of work doing it, but I felt it was worth it. Getting a good deal for others is not "easy". Seemed as if the shipping time was stated at time of co-op but several people were nervous because they didn't ship earlier than that. Most places will not ship to each participant. It's too much work. Shipping to one person saves them time and money.