However, the insurance adds # 1,500 over the life of the loan; that's MORE than the interest cost and it's almost pure profit for the bank! (moneysavingexpert.com)
Likewise some authors will prefer to make a book with a number of fixed costs and then see all sales beyond those needed to pay those costs as pure profit. (madgeniusclub.com)
Over time, the capital investment will turn into pure profit. (karencommins.com)