Walmart offers the Calico Critters Adventure Tree House for $69.95. Opt for in-store pickup to knock it to $30.20. (Amazon charges the same with free shipping.) That's the lowest price we could find by $20. It measures 13" x 11.5" x 15", and includes a tree trunk and grass base, two tree branches, a tree stem for the pulley, two railings, and two ladders. Accessories and Critters are sold separately.