Hey aki_sato - I think there might be an old petra or poudre Sloane on overstock today... Not sure because I'm waiting (4 hours... ugh) in a ferry lineup and therefore just killing time on my BlackBerry - which doesn't let me see the pictures on overstock.com, but from the description and price I think it may be a Sloane in one of those two colours and although you started out wanting poudre I'm not sure but think you may have also become a fan of old petra during the course of this thread!
Anyway - check out overstock.com... It may be something else entirely and if so I apologize in advance for getting your hopes up, but just in case it is a Sloane I wanted to give you a chance to get it!