Please, show all calculations to get extra credit points!

A firm invested $300,000 in an old factory and started producing secret products. After the top management realized that it costs $1,000 to produce one item, the decision was made to abandon the project. One of the managers suggested covering all of the investments by selling the four items that were already produced at the factory. The manager suggested investing an additional $20,000 in each item to significantly increase their quality. In addition, $50,000 was allocated for an intensive IMC campaign to introduce the product to potential buyers. Estimate the break-even price for one item.