That said, there's no reason why cargo insurance wouldn't be available, but it definitely isn't included in the cost of the goods. That stuff is stupid expensive IRL for ships doing the kinds of trips PCs take (ie going to places where you are likely to run into pirates or flying on antique small traders with ragtag crews).
Typical IRL ocean freight insurance is $4.50 per $1000 cargo value. Maybe $6.50 to rough waters. Convert to 5cr per 1kCr value declared?
Most IRL ocean claims take about 6 mo to clear.