LEGO BUYS is a term used to describe the purchase of LEGO kits. LEGO kits are collections of LEGO pieces that can be used to build a variety of models, from simple structures to complex machines. LEGO kits are popular among children and adults alike, and they can be purchased in stores or online. KITS is the four-letter acronym for LEGO BUYS, which stands for 'Kits for Interlocking Toy Systems'.