I have had a Zibbet shop since I believe it opened and I have had fabrics, quilts and a few other things listed and sold a total of three items.
While I gave quick feedback for the buyers, I never got feedback from them and I think when you are selling things, that feedback is important to those looking to purchase from your shop.
I even became a premium member to help with sales, but after almost a year of paying $9.95 a month, I had to search my heart and determine it was not profitable or smart to do so any longer, so I have closed down the Layers of Hope - Quilting 911 Zibbet store.
I still have my Etsy store open, not much in it lately, but I hope to add more when things settle down around here. I have only had one sale on Etsy, but I got great feedback from the buyer and I don't pay $9.95 a month.