BookSirens vs Booksprout vs ReadRipple: what a review really costs

Every ARC service advertises a price. Almost none advertise the number that matters: what you paid, divided by the reviews that actually appeared on Amazon. This guide shows how to work that number out for the three pricing models you will meet, using round figures you should replace with the services' current prices and your own results.

Competitor models are described as publicly stated in October 2026. Prices and tiers change; check each service's site before deciding.

Model 1: listing fee plus per-download fee

BookSirens is the best-known example: a fee to list the book, then a fee each time a reader downloads the copy. You pay for downloads, not reviews. Readers may or may not post; the service encourages it but cannot make it happen, and the Amazon page is not checked on your behalf.

Worked example with illustrative figures: a $10 listing fee plus $2 per download, 30 downloads, and 12 reviews posted. Cost $70, reviews 12, cost per review $5.83. If only 6 readers post, the same $70 is $11.67 per review. Your real cost depends entirely on reader follow-through, which you only learn afterwards.

Model 2: monthly subscription

Booksprout sells tiers: a limited free tier, then monthly plans that raise the number of books and advance copies you can run. The fee is the same whether you get three reviews or thirty, which makes it cheap for prolific authors with books that readers grab, and expensive for a debut.

Worked example: a mid tier at an illustrative $20 a month, one launch in the month, 15 copies claimed, 8 reviews posted. Cost $20, cost per review $2.50. The same tier with a book that only 4 readers claim and 2 review: $10 per review. An author publishing monthly with strong claim rates does well here; an author launching twice a year pays for ten idle months.

Model 3: per verified review

ReadRipple charges only when a review is verified live on your book's Amazon page. You set the price per review, from $4, and prepay the number you want. Readers claim the book by genre, the submitted review link is checked against your Amazon page before the reader is paid, and any review not verified within three days returns to your wallet.

Worked example: 15 reviews at $6. Prepay $90. If 15 are verified, cost per review is $6. If only 11 land inside the window, you pay $66 and $24 comes back, and the cost per review is still $6. The number you budgeted is the number you pay. There is no subscription and no fee for downloads that never turn into reviews.

Side by side

• Cost known in advance: per verified review yes; listing plus download no; subscription yes for the fee, no for the result.
• Pay for reviews that never appear: listing plus download yes; subscription yes in effect; per verified review no.
• Review existence checked before you pay: per verified review yes on ReadRipple; the other two models leave that to you.
• Best for a debut with a small budget: per verified review.
• Best for a prolific author with high claim rates: a subscription can win on raw cost; compare your last quarter's actual reviews against the fee.

The questions to ask any service

1. What exactly triggers a charge: a listing, a download, a month, or a verified review?
2. Do readers choose the book, or are they assigned? Assigned readers produce fewer and flatter reviews.
3. Is any star rating promised or implied? If yes, leave. That is a paid-review scheme and Amazon treats it as one.
4. Does anyone check that the review is live on Amazon before I am charged or the reader is paid?
5. What happens to my money if reviews do not appear within the stated time?

The honest caveat about ReadRipple

Per verified review is the model we chose because it is the one where the author's risk is lowest, and we built this site, so weigh that. The arithmetic above is the same whoever runs it: divide what you paid by the reviews that are still on your page three months later. Whichever service gives you the best number on that calculation is the right one for your book.