It sounds like you are purchasing your supplies from US resellers/ wholesalers, hence the tariffs. Have you explored buying directly from the source country or a third party country like the UK ? Although, the US puts high tariffs on imported goods, Canada has dropped most of the reciprocal tariffs. If you can circumvent the goods going through the US, it should reduce your landed cost.
Great looking jigs, and all the best with your enterprise. The Crappie jigs I bought from you have been killer !