Alex is a salesperson who receives an annual salary of $18,000 paid semimonthly plus commissions of 5% of the retail price of each unit he sells which is paid on the final pay date of the month. During his first month of employment, he sold four units for a total of $1,000 and requested a 5% draw against his $15,000 monthly minimum sales, in accordance with his employment agreement. How much should Alex receive in his gross pay for the end of his first month