August 22nd, 2026   •   4 minute read   •   Issue #168

Facebook doesn't know whether you sold a book.

It knows someone saw your ad. It knows someone clicked it. It knows what that click cost you.

Then the reader lands on Amazon, and Meta loses them completely.

Everything after that point is a blank. Which means every number on your Facebook Ads dashboard is describing the doorway, not the sale.

Most authors are running their entire business off numbers that stop at the doorway.

The Numbers Authors Panic Over

Here is what I see authors switch off profitable ads for

→ CPC (Cost Per Click, the price you pay every time someone taps your ad) drifted from $0.38 to $0.57.

→ CTR (Click-Through Rate, the percentage of people who click after seeing it) slipped under 1%.

→ CPM (Cost Per Mille, what you pay for every 1,000 times your ad gets shown) jumped on Tuesday.

→ Frequency reached 2.4.

→ Reach is down, engagement is down, and the quality ranking says "below average".

Every one of those is a number about the click.

Not one of them is a number about the sale.

When you send traffic to Amazon, that is the only kind of number Facebook can give you.

It counts the click and then the reader crosses onto Amazon, where Meta has no visibility whatsoever. No tracking pixel on your product page. No purchase data coming back. Amazon doesn't share it, and Meta can't guess it.

Your ad account will never show you a book sale. Not because your ads are not selling books, but because the sale happens somewhere Facebook can't see.

The Two Numbers That Decide Everything

So zoom out. All the way out, past the Facebook Ads dashboard and ask yourself:

How much did I spend on advertising this month?

How much did I earn in royalties this month?

Those are your primary metrics. There are only two of them, and neither one lives in Ads Manager.

The first comes from your ad accounts, all of them added together. Facebook, Amazon, BookBub, promo sites, whatever you ran.

The second comes from your KDP dashboard: ebook royalties, paperback royalties, Kindle Unlimited royalties, plus anything from wide retailers or direct sales.

Same window for both. Not a day. A month at minimum, and a rolling 90 days is better.

Then you subtract.

Spent $600, earned $940 in royalties. The business is growing. Leave it alone and feed it.

Spent $600, earned $420. Something is broken. Now, and only now, you have a reason to go digging.

That's the whole hierarchy. The primary metrics tell you whether there is a problem. The secondary metrics tell you where it is.

Most authors have this backwards. They let a secondary metric declare an emergency, then never check the number that would have told them nothing was wrong in the first place.

What The Small Numbers Are Actually For

They are diagnostic tools. They are not verdicts.

Once spend and royalties tell you something is off, the small numbers become genuinely useful.

A low CTR usually means the creative isn't landing. The image isn't stopping the scroll, or the first line isn't speaking to the right reader.

A healthy CTR with flat royalties usually means the click was fine and the book page lost the sale. The cover at full size, the opening line of the blurb, the price, the reviews.

A rising CPM often means nothing about you at all. It means the auction got busier, because it's Black Friday, or an election week, or every retailer in the country is bidding against you for the same attention.

Read that way, the small numbers earn their place. Read as a verdict, they will have you turning off the ad that was paying your mortgage.

One more thing about the window, because this is where it goes wrong even for authors doing it right.

Royalties arrive late. A reader who buys book one in August might not buy books two through six until October. Page reads trickle in over weeks. Bestseller Rank changes can show up long after the click.

So your first month will always look worse than the truth, and the month after it will look better.

Which is why the direction matters more than the number. Three months of spend set against three months of royalties will tell you more than any single week ever can.

Facebook's job is to sell you clicks. It's very good at that. It's not your accountant, and it was never meant to be.

Your dashboard tells you what the traffic cost.

Your royalties tell you what that traffic was worth.

That's it for this week. 

Thanks for reading. See you next Saturday.

To Your Success
– Matt