Monthly ebook sales as measured by the AAP from 14 reporting publishers rose slightly in April to $72.8 million, the second-biggest ebook sales month so far this year after February’s monster month of $90.3 million. Once again, that puts ebooks behind adult trade hardcover ($111.4 million) and trade paperbacks ($95.9 million) for the month, and but this time they comprised just under 19 percent of all trade sales for April. The sales numbers seem to indicate that Random House’s move to the agency model in March (when ebook sales were at $69 million) has been absorbed into the overall ebook […]