Vijay is the most successful salesperson for Excelsior Software. It is estimated he is responsible for $750,000 p.a. of profit before tax earned by the business. To replace Vijay, it would likely take six months to obtain a replacement and a further four months of training. In the first twelve months, the replacement would likely produce approximately 70% of the revenue of Vijay, after which they should generate the same level of revenue. Excelsior Software pays a corporate tax rate of 25%. 

Calculate the sum insured required for key person revenue life insurance cover.