Water World Inc. (WWI) is introducing a new swimming pool called the "Ready for Summer". The new pool will sell for $18,000 and WWI estimates that it will sell 23 Ready for Summer pools in Year 1. Of the 23 Year 1 Ready for Summer pools sold, 8 will be sales to customers that were originally planning to buy WWI's mid-level pool, The Hampton, which has a selling price of $27,000. What amount should WWI use as the Year 1 incremental Sales (Revenue) figure when evaluating this project