The diagram below shows my account statistics from October last year to today.

Overall it shows that exposure is good, but sales are slow.

The green bars indicate the number of impressions, which you can see have been clearly on the rise, except for a slight drop in February.

To date, the number of times my books have appeared on Amazon webpages is approaching 400,000.

The blue line is the amount of money spent on advertising (pay per click), which has evidently spiked upwards during March.

The orange line represents sales, and this is a little puzzling to me. There were lots of sales in December, almost none in January, then it jumps again in February before bottoming out again in March.

As it stands, my books are experiencing almost 4,000 impressions a day, which is close to where I need it to be. I could slow down the amount of money spent on clicks, but in my case I am prepared to let it ride for now, as public exposure to my work is paramount.

In fiscal terms, over the course of six months I am running at a loss of around A$75. Up until March, the gap between sales and costs hovered between $20 to $30, which was reasonable. However, this month has cost me over $40 in advertising for only one sale, which has knocked the stats out a bit.

I must stress that in my case I have upped the bidding price on keywords for wider exposure, which has blown out the costs a little. I can turn this down at any time, but at this point am happy to leave things where they are.

Overall, I would recommend Amazon Ads, provided you do keep an eye on what you are spending.