Sieveright Harris, an independent business man, sells seashell necklaces to retailers for $5. The variable cost of goods sold per necklace is $1, with a selling commission of 10 percent. Fixed manufacturing costs total $25,000 per month, while fixed selling and administrative costs total $10,500. The income tax rate for Harris is 30%. What are target sales in necklaces to generate after-tax income of $3,080