Thanks for your reply, but unfortunately it does not answer my question. The weight of the product in my shopping cart is well under the 13 oz limit which is why I'm getting a First Class quote.  The problem is it's not quoting for First Class parcels it's only quoting for a stamped letter.  It will quote for a First Class Mail International Parcel just not domestic. For domestic it quotes a letter rate.  There must be a setting somewhere that allows you to choose which First Class options you'd like to use.