wheres the best place to grab an z-tube? i've been checking the forums but the damn things seem to disappear as soon as they're posted!! i swear its like people got ESP or something and call dibs on it 3secs after the seller makes the post! i've seem them on ebay for 90 bucks + shipping, but seems like they're going for like 50/60 shipped on the forums. anyone hear got one they're looking to part with?