You'd probably be set back more than 1k for an item this good. But platinum is much, much easier to earn than adventure points. Good deal though, I agree.
I got one of these for my 54 SK and I gotta say, they RULE! I mean, when you consider the other items that go for 400pp or more arent even as good as these (I may be wrong as I am not that good at armor pricing and statistics). I'ld go with these all the way!
Kleighoen T`hegvhai 54 Shadow Knight Antonius Bayle