LOS ANGELES (AP) — It pays less and less to buy and flip a home these days. From April through June, the typical home flipped by an investor resulted in a 25.1% return on investment, before expenses. That’s the lowest profit margin for such transactions since 2008, according to an analysis by Attom, a real estate data company. Gross profits — the difference between what an investor paid for a property and what it sold for — fell 13.6% in the second quarter from a year earlier to $65,300, the firm said. A ...