Kindle Self Published Books: Success Metrics & Analytics

Okay so the dashboard thing everyone obsesses over – your KDP reports – honestly most people are looking at the wrong numbers and it drives me crazy because I did the same thing for like two years.

First week I published my first low-content book back in 2017, I checked my sales rank every hour. Literally every hour. My girlfriend at the time was like “you need therapy” and she wasn’t wrong but here’s what actually matters when you’re tracking this stuff.

The Reports That Actually Tell You Something

Your KDP dashboard has like three main areas and two of them are kinda useless for decision-making. The Sales Dashboard is where everyone lives but the Prior Months’ Royalties section is where the actual money story happens. I check sales dashboard maybe twice a week now, but I’m in prior months every single day because that’s where you see the KENP reads if you’re in KDP Select, and that’s often where 60-70% of my income comes from on certain books.

KENP is Kindle Edition Normalized Pages – basically Amazon pays you per page read through Kindle Unlimited. Right now it’s around $0.0045 per page but it fluctuates monthly based on the KU global fund. I have a spreadsheet where I track the rate changes and honestly it’s been pretty stable between $0.004 and $0.005 for the past year or so.

BSR Is Lying To You (Kinda)

Best Seller Rank is the thing everyone screenshots and celebrates but here’s what nobody tells you – it updates hourly and means almost nothing in isolation. A book ranked #50,000 in the Kindle Store might sell 5 copies a day or 15 copies a day depending on category, season, and what Amazon’s algorithm had for breakfast.

What you actually wanna track is your category BSR, not your overall store rank. If you’re ranked #8 in “Crafts & Hobbies > Needlework > Cross-Stitch” that tells you way more than being #200,000 in the entire Kindle Store. I’ve had books at #500k overall that made me $200/month because they dominated a tiny niche category.

Oh and another thing – BSR drops faster than it climbs. You can sell 10 copies in one day and jump from #100k to #20k, but then sell nothing for two days and you’re back at #80k. It’s not linear at all. I learned this the hard way when I thought my gardening journal was “taking off” but it was just one bulk order that vanished.

Setting Up Tracking That Doesn’t Make You Insane

I use a Google Sheet. I know there’s fancy software like KDP Rocket and Publisher Rocket but honestly for tracking metrics you just need columns for:

• Date
• Book title
• Units sold (Kindle + paperback separate)
• KENP reads
• Estimated royalties
• BSR at time of check
• Ad spend if running Amazon ads

I update this every Monday morning with my coffee. Takes maybe 15 minutes for my whole catalog of like 200+ books. The books that aren’t selling anything I just skip after a while – if something hasn’t sold in 3 months it’s dead and I either redo the cover or just let it sit there as a lottery ticket.

The Click-Through Rate Thing Nobody Explains Right

If you’re running Amazon ads – and you probably should be on at least your top performers – your click-through rate matters way more than impressions. I see people bragging about 50,000 impressions but if your CTR is 0.1% that means your ad sucks or your targeting sucks.

Aim for at least 0.3% CTR, ideally 0.5% or higher. My best-performing ads are around 0.8% and those are usually on very specific longtail keyword targets like “cross stitch pattern books for beginners large print” instead of just “cross stitch books.”

Wait I forgot to mention – your conversion rate from clicks to sales matters even more. Amazon doesn’t show you this directly but you can calculate it. If you got 100 clicks and 5 sales, that’s 5% conversion. Anything above 3% is decent, above 8% is really good, above 12% means your book is probably underpriced honestly.

My dog just knocked over my water all over my notes so lemme think what else…

The Read-Through Metric For Series

This is gonna sound weird but if you have a series of books – like I have this set of 5 gratitude journals with different themes – you need to track read-through rate manually because Amazon won’t do it for you.

Take the sales of Book 1 in a month. Then look at Book 2 sales. If Book 1 sold 100 copies and Book 2 sold 60 copies, your read-through is 60%. That’s actually pretty good for low-content books, terrible for fiction ebooks where people expect like 80%+ read-through.

I use this to figure out if Book 1’s description is promising something that Book 2 doesn’t deliver, or if there’s a pricing issue, or if people are just happy with one journal and don’t need more. For my habit tracker series the read-through was like 20% which told me people just wanted ONE habit tracker, not five different versions, so I stopped making more.

Reviews And The 50-Review Threshold Thing

Everyone talks about getting to 50 reviews because supposedly Amazon’s algorithm gives you a boost. I’ve tested this across probably 30 books now and honestly… it’s not as dramatic as people say? Like yes, there’s usually a small uptick in organic visibility around 40-60 reviews, but I’ve also had books with 15 reviews outperform books with 80 reviews because the keywords were better.

What reviews DO affect clearly is conversion rate. A book with 4.5 stars and 30 reviews will convert clicks to sales way better than 4.5 stars and 3 reviews. People trust the wisdom of crowds I guess.

Track your review velocity too – that’s reviews per month or per 100 sales. If you’re getting 1 review per 100 sales that’s pretty normal for low-content. Fiction gets higher rates, like 1 per 50 or even 1 per 30 if readers are engaged. If your rate is dropping it might mean quality issues or that your book’s attracting browsers instead of committed buyers.

The Money Metrics That Actually Pay Bills

Revenue per book is cute but profit per book is what matters. I spent probably a year focused on revenue before I realized I was spending $40 in ads to make $60 in royalties on some books. That’s $20 profit per book which sounds okay until you factor in the time spent on listing optimization, the cover design cost, formatting, etc.

Now I track:

• Total royalties per book per month
• Total ad spend per book per month
• Net profit (royalties minus ad spend)
• ROI percentage (net profit divided by ad spend times 100)

Anything with less than 50% ROI I usually pause ads on unless it’s a Book 1 in a series where I’m okay taking a loss to get readers into the funnel.

Oh and another thing – your page count affects your royalties in ways people don’t think about. A 200-page book at $4.99 might net you $3.15 after Amazon’s cut and printing costs for paperback, but a 120-page book at $6.99 might net you $3.80 because printing costs are lower. I have a whole calculator for this that I built after publishing like my 50th book and realizing I was leaving money on the table.

Seasonal Patterns You Gotta Track Year Over Year

This is where the spreadsheet really earns its keep. My gratitude journals sell like crazy in November and December (holiday gift season + New Year’s resolution shopping), okay in January, then fall off a cliff February through August, then pick up again in September.

If I only looked at month-to-month I’d panic every February and think the book was dead. But year-over-year I can see that February 2024 actually did 15% better than February 2023, so the trend is up even if the absolute numbers are low.

I color-code my spreadsheet by season now – green for high season, yellow for medium, red for low season. Makes it way easier to spot when something’s actually wrong versus just normal seasonal variation.

The A/B Testing Problem With KDP

You can’t really A/B test on KDP like you can with Facebook ads or whatever. You can’t show half your traffic one cover and half another cover. So what I do is… kinda janky but it works.

I’ll run a book with Cover A for 2-3 months, track all the metrics, then swap to Cover B and run another 2-3 months. Obviously this isn’t perfect because seasons change and market conditions change, but if Cover B is dramatically outperforming or underperforming you’ll see it in the CTR and conversion rate.

Did this with a meal planning journal last year – Cover A was minimalist and pretty, Cover B was busier with more text and graphics. Cover B absolutely crushed it, like 40% better CTR and 25% better conversion. Ugly sells sometimes, turns out.

Tools I Actually Use Versus Tools People Say To Use

Everyone’s gonna tell you to use Publisher Rocket for keyword research and it’s fine, I have it, but for metrics tracking it doesn’t really help much. Same with Helium 10 or whatever.

What I actually use daily:

• Google Sheets for tracking
• KDP dashboard obviously
• Amazon ads dashboard for campaign metrics
• A simple Python script I wrote that scrapes my BSR once a day (probably against TOS but whatever)
• My phone’s calculator app for quick ROI math

That’s it. I tried Book Bolt for a while and it was just more complexity than I needed. Maybe if you’re doing hundreds of uploads a month it makes sense but for tracking performance it’s overkill.

The Metrics That Don’t Matter As Much As You Think

Page reads on individual days – super volatile, don’t stress about it. I’ve had books go from 5,000 KENP one day to 200 the next and back to 4,000 the day after. Kindle Unlimited readers are weird and binge-read unpredictably.

Your “also bought” placement – you can’t really control this and it changes constantly based on Amazon’s algorithm. I used to screenshot every time one of my books appeared in another book’s “also bought” section and it didn’t correlate with sales at all.

Number of keywords you’re ranking for – some tools show you ranking for 500+ keywords but if they’re all position #500,000 who cares? I’d rather rank #5 for ten highly relevant keywords than #50,000 for five hundred random ones.

Okay so funny story, I once spent three hours optimizing my keywords to rank for “journal” as a broad term and got to like #2,000 for that keyword and my sales went… nowhere. Because “journal” is too broad and people searching that aren’t buyers, they’re browsers. Meanwhile “daily journal for men with prompts” was getting me ranked #15 and actually converting.

When To Kill A Book Versus When To Fix It

If a book has been live for 6+ months with decent visibility (you’re running some ads or it’s ranking okay organically) and it’s sold less than 20 copies total, it’s probably dead. Either the niche is too small, the competition is too fierce, or your execution is off.

But before you unpublish, try:

• New cover
• Price change (try going UP sometimes, not just down)
• Subtitle optimization
• Different ad targeting

I’ve revived books that were doing 2 sales/month up to 30 sales/month just by changing the cover and raising the price from $5.99 to $7.99. People perceived it as higher quality and the lower printing cost meant better margins anyway.

If none of that works after another 2-3 months, yeah, it’s dead. Leave it up as a lottery ticket or unpublish and recycle the content into something else. I’ve definitely done that where I took a failed planner and broke it into three smaller planners that each sold better than the original.

The tracking gets easier over time once you have your systems set up. First few months you’ll be obsessive and checking everything constantly – that’s normal, I still do it with new launches – but eventually you get a feel for what numbers mean action is needed versus just noise.