Amazon 30 day cliff – OMG, it’s alive!

This morning I made an important personal discovery. The drop off in sales of a new book release on Amazon after 30 days is like, A THING.

Amazon waterfall

OK – it’s a waterfall not a cliff, but way prettier than the Amazon logo

I thought the 30 day cliff was a myth (no rhyme intended), mainly because I’d never experienced a good run in sales in the first month before to notice a drop off. I thought it was just something people ¬†idly speculated about like the Loch Ness Monster, Big Foot or funny ITV sitcoms. But my word is it real.

Sales of the new Ingrid Skyberg book, Kill Plan, were increasing daily – much to my ‘pinch me I’m dreaming’ amazement – then overnight on day 30 they decreased by exactly 40%. Those algorithms are really good at maths. The slope on the sales graph is precipitous.

Amazon 30 day cliff sales drop off

See – told you it was steep

Now, don’t get me wrong – I’m still completely bowled over and thrilled by the success Kill Plan has enjoyed – it’s selling more than any of my other books ever sold combined.

I am NOT complaining – Kill Plan continues to sell very nicely – I’m just marvelling at the very real cliff that previously I’d only heard others talk about.

No wonder some authors of shorter fiction rush to get out a new book every month – got to feed that hungry Amazon monster.

However, it’s just not possible for full length thriller novels (at least not for me). I can’t even type that quickly.

But I do have a novella in the pipeline and the first draft of book three is a third written, so I hope to have something to satisfy the Amazon beast very soon.

In the meantime, not to miss the opportunity of a plug, Kill Plan is still only 99c/99p on Amazon and will be for a little while longer. So you can snap up a copy if you haven’t already.



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  1. I picked up Fresh Doubt because it was free and really enjoyed it. I liked the characters and the twists and turns it took. I’m now reading Kill Plan and will read your other works so hopefully sales won’t drop off that much. Thanks for writing them. You’ve pick up a new fan. Jim

    • Thank you for the generous feedback, Jim – it’s much appreciated! Very pleased to hear you’re enjoying the books. Cheers!

  2. Just wanted to pop by and say thank you for writing these Ingrid books. Although I’ve not read them myself, my goodness have they made family holidays 1000% easier – my mum is completely hooked! Many thanks from two grateful sons who now have full control of the hotel TV.

    Seriously though, great work and well done, I will add them to my guilt-inducing ‘why haven’t you read me yet’ list, just after those Iain Banks sci fi ones.

    • Yay! I can’t ask for higher praise than that! Thanks Alex


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