Why is the postage on my label different than what it should be with my product weight(s)?

If you generated a label that has an unexpected postage because of weights, check a couple of things:

Head to your Settings, under Packages -

Using Return Magic, you are able to set a default package weight, which is added to your product weights to calculate total shipment weight:

(Product weight x QTY) + Package weight = Shipment weight

The (Product weight x QTY) is added for each different SKU in the return request.

1. Under Default Dimensions, check the weight that you've added for your package - that might explain the discrepancies
2. Under Default Weights, check if you've set a default product weight or minimum/maximum shipments weights

If that doesn't explain it, head directly to your Shopify products and check that the correct weight is entered. Note that if an order is placed before a product weight is updated, the product in the order will still have the previously invalid weight.