Kate Spade "Make It Mine" flaps generally cost between $45 and $115 on resale markets like eBay and Poshmark, with prices varying based on the design, condition, and rarity. The "Make It Mine" line is no longer a current collection on the main Kate Spade website, so availability is primarily through resale and third-party sellers. Original retail prices for flaps were often around $75-$100. These are very Popular and Stylish Customizable flaps