The social cost of unemployment to the community is the total cost to the community, is the sum of all the items listed here.
Prices used to be based on 'cost plus reasonable mark-up', and unhindered competition was meant to ensure that the mark-up was reasonable. Prices are now based on what people can be persuaded to pay for what they can be persuaded to buy. The mark-up between producing in a low-wage country, and then selling in a high-wage country, can be enormous.
Manfred Davidmann pointed this out in 1996, also saying that imports were now being priced at what the market will bear, or just under. The enormous profit margins then cause production to move from high-wage to low-wage countries. The consequence is a lowering of standard of living in high-wage countries to that in low-wage countries, instead of a raising of standard of living in low-wage countries to that in high wage countries.
The large additional profits which result from transferring operations abroad then do not result from doing a better job, or from providing better, or more needed, or more effectively produced, goods or services. These additional profits result from importing unemployment into the UK, are the result of dismissing British employees.