List it Marketplace requires ALL items are shipped with tracking numbers

Shipping rates are calculated by the following formula:
SHIPPING = flat + ITEMS*per item + SUBTOTAL*(% of subtotal)/100 + WEIGHT*per lbs.;

You can define the following values:
flat rate - Flat shipping charge. This value will be added to the shipping rate regardless of the weight, price and number of items ordered.
per item - Flat shipping charge per item ordered.
% - Shipping charge based on a percentage of the order subtotal.
per weight unit - Flat shipping charge per weight unit ordered (for example, per pound or per kilogram - depending on the weight units used by your store).