I would absolutely LOVE another one of these back.. However for what you are asking, I simply don't have the money :/
Just to clear things up, it was clash1 who bought it of BelieveMeSafety for his asking price of 70gb (3500c). But that was back when Fuchsia ICMs and and Stray x3s were selling for 90gb - which are both now both around the 350gb ballpark area. Though there are indeed far fewer Blank Towers than Fuchsias and x3s, so your 600gb asking price is, I guess, justifiable. I'll be watching this space closely.