Insurance is included, by default, when you select CIF, standing for Cost Freight (and) Insurance. If you order shipping according to DAT (Delivered at Terminal) or DAP (Delivered at Place), you must inform your shipping company that the cargo must be insured.
Shipping insurance is cheap, and rarely costs more than US$50 to US$100. Normally, shipping insurance only covers the value of the cargo, in case of transportation damage. It will not cover lost sales, or product development costs.