Importing guns is a business. They charge what they want and hope the market bears the fees. If not they won’t last long. But you also have to make money, a profit and have an extra reserve because I am certain there are unexpected, difficult to pass along cost. Some importers have a flat fee schedule, some are cost plus a service fee and some have sliding scales where the more you import the lower the average cost per gun. I use a sliding fee importer because I have imported lots of 5-20 guns at a time when the cost per gun drops as the group size increases.