They have been selling for around $630 on eBay for a while now. The last one went for just over $400 (a white one). They seem to come up about every two weeks.
My fifth one, which I bought as a box of parts ($350), is a long-term project. It's becoming a coral / fiesta red Esquire. I have the proper Re-Ranch paint. Ordered the BG-1400 from the SD custom shop this week. The lady who took my order said that she was making mine at the same time as a couple for Billy Gibbons.
I'm going to fill the cavities with wood and start from scratch. String-through Tele bridge, 4-way Esquire controls.