They are not that scarce. I see them come up for sale fairly often on eBay and Reverb. There are two others that I know of for sale right now. They are both being offered up at lower prices and they are not selling. I had listed mine on eBay at $900 OBO and it sat for months without even an offer. I just decided I'd keep it. But, I'd sell it a heartbeat if I could get anywhere close to $1500 for it!
Doc