https://www.amazon.com/gp/product/B...8c964a9312ea54650INT&smid=A19XWV3CELD513&th=1 Apasiri Scratch Resistant Flat Roof Cat House (15" x 15" x 13") for $24.99 - $10 when you apply promo code 566N852Rat checkout = $14.99. Shipping is free with Prime or on $35+ orders.