Products X, Y, and Z are produced from the same process at a cost of $7,500. Five thousand pounds of raw material yields 3,500 X, 4,500 Y, and 3,000 Z. Selling prices are: X $2 per unit, Y $4 per unit, and Z valueless. The ending inventory of X is 90 units. What is the value of the ending inventory if joint costs are allocated using net realizable value?