An assembler uses seven key components in its final product. These components are purchased from different suppliers. Historical data shows that the reliabilities of the purchased components are as follows:

Component	Reliability
1	0.990
2	0.990
3	0.980
4	0.995
5	0.965
6	0.985
7	0.995

The assembler purchases 6000 units of each component and inspects the products after production. The total direct cost of final products is $600 per unit. After inspection, 30% of the defective items can be fixed and on average the rework cost is $50 per unit. Calculate the actual unit cost considering the reliability