These houses include the most popular options, Infrared Bulb, Square window, Door upgrade and Heated Pad ULTIMATE/HT PAD/OAK&WALNUT $399.00 LARGE ULTIMATE & PAD/OAK&WALNUT $439.00 LARGE ULTIMATE/HTD PAD/WAL & RED $439.00 ULTIMATE/HTD PAD/RED & WALNUT $399.00 LG ULTIMATE/HTD PAD/BURGUNDY&BLUE $439.00 ULTIMATE/HEATED PAD/CEDAR LINING $389.00