If you have a fair amount of bulk in your collection, we recommend filtering out the nonfoil commons and basic lands prior to sending to our Standard Service. In the vast majority of cases, commons and basic lands are not worth the cost of shipping and are not worth our labor/fees to process. If there are specific commons you are sure have buylist market value, those are fine to send.
What if my shipment is a mix of valuable cards and bulk?
Remove commons and basic lands.