When ordering new or used books, CD's, DVD's from one of Amazon.com's small vendors, a customer is offered 3 shipping options: Standard Shipping, Expedited U.S. and International. In the USPS handbook of regulations, Standard Shipping is flatly defined as Parcel Post rate, nothing else. Media Mail service is not offered by Amazon, but Media Mail is the service most Amazon small vendors are giving Amazon customers in order to maintain their profit margin. Media Mail service costs less that Parcel Post or 1st Class rate... read full review »