I agree that it won't be a large multiple, but, I do think it's naive to assume that it'll be a fraction of the cost. Consider the shear volume of stuff being transported. Millions of tons of goods across hundreds of delayed transports, some perishable, some with tight timeline requirements, some with tight contract requirements. And it's not like as soon as ships start moving again all of that cost will go away. Ships are still going to be diverted for weeks of not months to relieve traffic pressure.
If it's really time-critical, it's shipped by air, not sea. Container ships being delayed by a few days by rough weather, port delays etc happens all the time, and we're looking at a week tops here even for directly impacted ships.
