Does anyone know how this shipping business works if you sell online??? I went the the US postal service website and I put in a box size and a weight. It was just an estimation. For a five pound box that does not exceed the crazy size limits, to send to Washington, it says it will be 50.00. If I send it parcel post it is 12.00. that is a tremendous difference. I got those free boxes at the post office and they are priority mail boxes but they work great. However I don't think anyone is going to want to charge 50 dollars to mail a package. That is crazy.