The pro forma projections for growing a 20-hectare ginseng crop require the expenditure of $150,000 in the summer that the crop is planted, and an additional $50,000 in each of the next two summers to cultivate and fertilize the growing crop. After payment of the costs of harvesting the crop, the profit should be $200,000 in the third summer after planting and $300,000 in the fourth summer. Allowing for a cost of capital of 15% compounded annually, what is the economic value of the project at the start of planting?