I bought it for $100 in 2001, along with a second one. There was someone selling a bunch of them for that price at the time. I restored it and sold it to him a few months later for $400. It was such a piece of sonic junk, I felt like he'd probably return it. No one was into things that sounded like telephones yet!
But then he sprinkled it with pixie dust and now it's worth $3389? Or did he have more work done to it?
I did all the work on it. There's other tweaks that are all in the personal choice camp. I've worked on 6-7 variations of those things, they all respond a little differently. They all suck, really. That's the point!
Perspective, lots of things were $100 back then. You could buy an OP-6 for $200-300, a BA-6A for a grand or so, a Stalevel for $200-300, a Collins 26U for $300, a U67 for $1500-2500.