This is the biggest one I've built so far. It's 1/2256 scale. 28 inches long. It has over 1250 feet of fiber optic line in it. Over 1000 lights. It was built from an out of production Anigrad resin kit that was stupid warped when I got it. The customer had the kit for the past few years before he finally talked me into building it.
I straightened the hull by adding aluminum angle to the inside and then building a steel skeleton to keep it together and to support it. It weighs about 40 lbs.
He has $1100 in it.