Just for another view... I don't actively promote beyond AMS and the very rare BookBub (haven't been able to snag one in over a year). My time spent on marketing is less, way less than the time I waste on Forge of Empires. So beyond the aforementioned, my own site, and social media, I do bupkis for ads. But I've established a record of sorts with other retailers over time and get invited to participate in iTune free promos a few times a year. Apple iTunes is my second highest revenue generator, and every invitational bumps up my paid sales there and everywhere else (because of price match across the board). Now granted, I don't need book revenues to live on, so I'm an outlier who can afford a slow build up, but it does eventually pay off. Other than during new release months, my revenue by percentage is greater on wide than Amazon these days.