I would pay any price for one, it is my holy SE grail.
Not dated.....its a classic, that is why the Streamline fetches the biggest dollars in SE world.......
There are enough offerings of this overhyped razor on ebay, and if not today then tomorrow, they come up all the time.
It fetches the biggest dollars because the sellers smelled the hype, generated by threads like this.
Shave-wise I found nothing exceptional about this razor.
As a collector item, well, I don't collect stuff for the sake of collecting so I can't relate.