995 (it's not on sale), I just checked. It wasn't under Specials, I had to do a search for "vault". It was the only option that popped up for my "vault maxxed" character.
Gotta admit, as happy as I am to have it available (and I'm ecstatic!) it costs way more than I expected. I'm going to have to give serious thought to what to do next. I have 8 characters across 2 servers at max vault space, and at 995 a pop, that's .. mm .. more than I care to spend. By a lot. Now I have to decide which, if any, characters are going to get this space, or if I'm going to manage some of it with alts until (if) the price becomes more reasonable.
Still, I'm glad it's there and I'm sure when players find out about it, it will be a popular item.
995?! That's a rather significant increase from the 495 price during beta (I thought prices were supposed to go down, not up!) and I thought 495 was highway robbery. I'm better off putting those points toward another character slot for a mule. 105 slots versus just 15 and for nearly half that price.