Mrs. Katty sells 1terabyte USB sticks, which are purchased for a value of $ 600 each. She pays monthly $ 2,000 for the rent of the premises, $ 400 for water and electricity services and $ 100 of union dues for street vendors. If in her business she projects at the end of the month to have a net profit of $ 12,000 and her sales are 50 units sold on average per month, what will be the sale price that she should set for each USB memory?