Multiple monitors don't even have be a major productivity booster to be worthwhile. If an employee's annual cost (salary, benefits, other expenses) is $100,000,

Multiple monitors don't even have be a major productivity booster to be worthwhile. If an employee's annual cost (salary, benefits, other expenses) is $100,000, an extra monitor is a measly 0.15% more. If that one time expense makes the employee 0.15% more productive the monitor pays for itself multiple times over its lifetime.