Depends on what you class as economic. I am in the process of building a 7' x 6' x 13' kennel and run and by the time I have paid for the materials for the base, timber, plywood, insulation, roof felt and galvanised mesh etc I will be close on £700. OK I could have done it cheaper but this will be very well built and will last a long time. I looked at all the kennels at the CLA last weekend and although they look very nice they are not as well built and are expensive for what they are.