I'm shipping an iPhone 3GS (with original accessories), two cases, and a dock, each in their original boxes, to Malaysia through USPS Express shipping (since that's where the buyer on eBay is from. I want to ship everything (all in their original boxes as mentioned in an USPS padded flat-rate envelope since it's much cheaper than a box, and there are no flat-rate Express Mail boxes. It doesn't seem too unlikely that everything wouldn't hold up. Am I correct in that assumption?