CS overall is working pretty well, but still having problems with multiple items, especially when they are lightweight.
Example: One set of vintage Christmas ornaments, packaged to ship, weighs 15 ounces. Adding a second set only changes the weight by 3-4 ounces, but there is no way to reflect this, so the buyer is charged for almost another full pound. By the time they purchase 3 or more sets, the shipping cost has gotten quite high, due to the weight being calculated. It is not possible to list a lower weight, because a single set of ornaments can be shipped First Class and every ounce matters. Most of the 15 oz weight is packaging and doesn't really change much when ornaments are added, but it can't be lowered or customers will be undercharged if they only purchase one set of ornaments. CS is putting multiple items into one box, so that is not the problem, it is simply that the weight doesn't increase by 15 oz for every set. This is also a problem with paper items. Another field to add the weight for an item that doesn't require additional packaging would be very helpful!