A lot of the shipping companies changed at the start of the year I think it was that they charge extra when packages are over a certain dimension. I don't recall what the specfics are off hand, but my wife sells porch leaner signs online. They a 1x10" board that is 48" long. There's a $15 surcharge on everyone she ships due to them being 48" (I think anything over either 24" or 36" automatically gets charged an extra $15 regardless of how much it weighs).