A Whirly popped up on my local CL. Decided to offer some trade/partial trade or see if I could get the price down just a bit from the grand he was asking.... no matter, it was sold in an hour!
That's exactly how I ended up here. The material cost to build one doesn't make sense because for a couple hundred more, I could get a new one delivered to my door. Used ones do pop up, but they go quick.
And unless you plan on doing a bunch of restorations, you're only going to use it once.