I have some old tea towels that were my mom's. I make them into small purses. cost: zero. I line with fabric given to me by a friend who "rescues" cast offs headed to the landfill from a factory that makes indoor-outdoor furniture. cost: zero. I use a button for closure. Cost: zero, as friends give me buttons and I have a stash from mom. Macrame cording serves as the strap. A little over a yard per bag at 20¢ a yard. Thread on hand. cost zero. SO cost per bag is about 30¢ If I buy a vintage tea towel, then the cost is up to a max. of $4.30