Perry P Louis, trading as the Umbrella Shop, ends his financial year on 30 September each year. On 1 October 20X4 he had no goods in inventory. During the year to 30 September 20X5, he purchased 30,000 umbrellas costing $60,000 from umbrella wholesalers and suppliers. He resold the umbrellas for $5 each, and sales for the year amounted to $100,000 (20,000 umbrellas). At 30 September there were 10,000 unsold umbrellas left in inventory, valued at $2 each. What was Perry P Louis's gross profit for the year