I wanted to share some observations from my first Amazon Sponsored Products campaign because the results have been different than I expected. I set a budget and simply let the campaign run. After 12 days, Amazon had permission to spend up to up to my set limit, but it spent only about 22% of that budget. That was one of the biggest surprises. Rather than spending my daily budget, Amazon appears to bid selectively, only entering auctions where its algorithm believes my book is a relevant match for the shopper's search. So far, the campaign has generated: - Over 10,000 impressions - 13 clicks - 2 attributed sales - Approximately 15.4% click-to-purchase conversion The search terms have also been encouraging. Amazon isn't matching my book to random searches—it has connected it with searches such as: - "getting over trauma" - "healing from trauma" - "books on betrayal trauma" - "how to heal trauma in the body" That has given me confidence that the algorithm is beginning to understand who the book is for. The most valuable lesson for me has been that a daily budget is simply a maximum, not a spending target. Amazon seems perfectly willing to leave budget unused if it doesn't believe there are enough high-quality opportunities to show the ad. This is a small sample and my ACOS (Advertising Cost of Sales) is running at about 43.85% when I deduct that cost from my Royalties, I'm basically breaking even. So, as an experiment I was willing to spend money on, it hasn't cost me a penny. That's encouraging. What is discouraging, isn't the behavior of Amazon Ads, I'm surprised at the restraint of spending that is occurring. My bottleneck on Amazon seems to be audience pool. There simply aren't enough shoppers searching terms that fit my niche for Amazon to justify spending my very modest budget. I'm planning to continue letting the campaign run without making changes and see what the data looks like over a larger sample size.