Only ship with a company that will reveal brokerage fees upfront (don't fall for the "it depends/varies" line, if the shipper has any experience they will be able to provide very accurate estimates, also many have a set fee) - brokerage fee has nothing to do with import fee/tariff set by government customs, depending on location it may be feasible/preferable to do your own "clearing" (that's what "brokerage" is about).
As I recall there are a few that have imported the Curent USA satellite lights
- I'd try to source something locally, unless there is something very unique about the lights you're considering