The Butterfly Price Guarantee assures you that products purchased from the Butterfly Table Tennis Center/Butterflyonline.com will not cost you less if purchased from any other North American online retailer. If you find a regularly priced product from another North American online retailer to be cheaper prior to your purchase, we will not only match their price, but also take an additional 10% off of the difference in price. This offer excludes "membership required" sites.