WOW...I think I would have to pass on it to. But then again if thats what the going market is calling for in your part of the world with no other alternative in getting one then it would be worth it to you. Just my opinion.
17cm is just about 7 inches, I'm pretty sure that's no where near max size.
I know how it feels when something is always out of grasp, and what it does come, it's more than anyone would be willing to pay. But, if you really like this pede, I know I do, I'd just go ahead and get it, I know I would if I could.