I agree that there is a very large part is missing. Otherwise, I am on the fence about this. I mean, if the author realizes a ten-fold return on their work, then who the heck cares about a $200 setup fee?
Either way, I can understand the poster's reluctance. Sony's Reader is too new, too unadopted. Of course, should it really take off, then I imagine that fee will go up. Certainly a better track record will help sway authors like her.