Check with any of your local kart shops to see if they have a carrier that they use for shipping. You will get a better shipping rate. Then, If you take it to the nearest shipping ‘hub’ for the carrier and have the person receiving it do the same, the price drops greatly. This eliminates the need for a lift gate, which can be expensive. If no local kart shops can help, try friends that have businesses that ship and receive merchandise frequently, and see if they will let you use their account to ship. Otherwise, you’ll need to open an account, and that could cost $$$$. You’ll also need to palletize the karts, which means ‘merging’ 2 pallets, or building a custom pallet to ship a kart on. This will be most of the shipping weight, btw.