What is the weight of typical packaging of small to medium packages?<br>Example:<br>Unit = Your SHIPPING_WEIGHT_UNITS (lbs or kgs) <br> 10% + 1 Unit 10:1<br>10% + 0 Units 10:0<br>0% + 5 Units 0:5<br>0% + 1/2 Unit 0:0.5<br>0% + 0 Units 0:0