Two friends and I had a small crafting business back in the 80's, little half aprons with pockets filled with clothespin dolls (our biggest seller), boys tool work aprons, stuffed calico cats, gingham dogs and a few other things. Went to craft shows, consignment shops etc. and we each made a few dollars mostly because we already had sewing machines and received lots of donated fabrics. Biggest sales were when our DH's took the items to work. Other gals were stay at home moms and I worked but I couldn't bring sale stuff there.
We stopped for a few reasons, one gal's sewing and interest level wasn't very good, buying fabrics, thread was eating into our meager profits, and I was tired of being sales and delivery person as well as keeping the books. When setting prices people never estimate fully the time and effort they put into making their items as well as the cost of maintening their equipment.