Affiliate disclosure: we may earn a commission when you buy through our links. Read how this works

Our data

How Do Multi-Volume Ebook Series on Digistore24 Price Their Volumes?

In every ebook series we reviewed, each volume has the same price and almost the same score. Here are the set totals and what to check before volume two.

How Do Multi-Volume Ebook Series on Digistore24 Price Their Volumes?

How do multi-volume ebook series price their volumes?

They charge one flat price per volume, whatever the volume covers. In our reviews that is EUR 12.99 per volume for the geopolitics series and $27 per title for the accounting series.

The pattern is consistent across the two largest families in our catalog. The Architecture of American Power, Rise of the Multipolar World and New Architecture of Global Power volumes are each EUR 12.99. The Sing and Solve Accounting titles, such as Remember the 5 Building Blocks, are each $27 before tax.

Scores follow the price. Volumes in a series show the same or almost the same score, because the same page structure, seller and refund terms repeat. As of October 2026 the spread inside any one series is 0.1 points or less.

Which series did we compare?

Four families: three geopolitics series sold by one Digistore24 account, and one 12-title accounting course. Together with Fables for All and a two-volume motorsport set, that is 36 offers.

Offers mentioned in this section
ProductCategoryOffer scorePriceBillingVerdict
The Architecture of American Power, Volume I: The Political Foundations of Power Politics & Economics 7.0/10 EUR 12.99 One-time payment Worth a look
The Architecture of American Power, Volume II: The Strategic Instruments of Power Politics & Economics 7.0/10 EUR 12.99 One-time payment Worth a look
The Architecture of American Power, Volume III: The Global Order of Power Politics & Economics 7.0/10 EUR 12.99 One-time payment Worth a look
The Architecture of American Power, Volume IV: The Strategic Foundations of Integration of Power Politics & Economics 7.0/10 EUR 12.99 One-time payment Worth a look
The Architecture of American Power, Volume V: The Adaptive Architecture of Power Politics & Economics 6.9/10 EUR 12.99 One-time payment Worth a look
The Architecture of American Power, Volume VI: The Future Architecture of Power Politics & Economics 7.0/10 EUR 12.99 One-time payment Worth a look
The Rise of the Multipolar World, Volume I: From Postwar Primacy to the End of the Unipolar Moment Politics & Economics 7.0/10 EUR 12.99 One-time payment Worth a look
The New Architecture of Global Power, Volume I: The Architecture of Financial Power Politics & Economics 6.9/10 EUR 12.99 One-time payment Worth a look
Sing and Solve Accounting: Remember the 5 Building Blocks Education 6.5/10 $29.23 One-time payment Worth a look
Sing and Solve Accounting: Master the 4 Basic Operations Education 6.5/10 $29.23 One-time payment Worth a look
Automotive and Motorsport Gear Engineering: Foundations Volume 1 (eBook) Hobbies & Crafts 6.4/10 $45.61 One-time payment Worth a look
Automotive and Motorsport Transmission Component Design: Volume 2 (eBook) Hobbies & Crafts 6.6/10 EUR 45.00 One-time payment Worth a look

The table shows a sample of volumes. The full counts are 6 volumes of Architecture of American Power, 6 of Rise of the Multipolar World, 5 of New Architecture of Global Power and 12 titles of Sing and Solve Accounting. Our geopolitics comparison, which geopolitics series to start with, covers the three Volume I titles in detail.

What does a full set cost?

The three geopolitics series cost EUR 77.94, EUR 77.94 and EUR 64.95, EUR 220.83 together. The 12 accounting titles cost $324 before tax.

That is simple multiplication, because there is one price per volume: 6 x EUR 12.99, 6 x EUR 12.99 and 5 x EUR 12.99. We found no discount for buying volumes together; each volume has its own order form.

For Sing and Solve Accounting the review for Remember the 5 Building Blocks notes that the series sells each small topic separately at $27, so the full set comes to more than $300. Eleven of the 12 forms added $2.23 in sales tax for a US address, giving $29.23; one form, Turn Data into Strategy, showed $27 with no tax added. The sum of the totals shown is $348.53, as of October 2026.

The two motorsport engineering volumes are priced differently: Volume 1 shows $45.61 and Volume 2 $45.

Set totals from our reviews

  • Architecture of American Power: 6 volumes at EUR 12.99 = EUR 77.94
  • Rise of the Multipolar World: 6 volumes at EUR 12.99 = EUR 77.94
  • New Architecture of Global Power: 5 volumes at EUR 12.99 = EUR 64.95
  • Sing and Solve Accounting: 12 titles at $27 before tax = $324.00

Do all volumes in a series score the same?

Almost. Architecture of American Power ranges from 6.9 to 7.0, while the Rise and Sing and Solve series show one score across every volume.

Volume V of Architecture of American Power scores 6.9, the other five 7.0. The Rise of the Multipolar World volumes all score 7.0, New Architecture of Global Power 6.9, and every Sing and Solve title 6.5.

The reason is structural. The geopolitics volumes share one seller account, one order-form layout and one refund window of 60 days, so seller, refund and price subscores repeat. They all score 3 to 3.5 on vendor transparency while scoring 7.5 on claim discipline. All 17 are Worth a look.

This means a score for Volume I tells you most of what you need about the later volumes, though not about the content, which we have not read.

What does a series price hide?

The total, the seller and the tax. A low per-volume price makes a set look cheap, while the order form shows each volume separately and may add tax or convert from euros.

Three details matter. First, the geopolitics volumes are charged in euros to US buyers, as covered in odd prices converted from euros. Second, tax varies by form, which sales tax and shipping at checkout explains. Third, these order forms have no sales page, so the price appears only at checkout, a pattern described in offers without a sales page.

Sing and Solve Accounting adds an overstated claim: its review says the page describes song-based learning as superior to all other methods, which the review calls an overstatement. Claim discipline is 5 and vendor transparency 3.5, with the seller listed as SEKAEL and no postal address found.

How does that compare with other families of titles?

The same flat-price pattern appears in other title families, but the scores vary with the seller. Five Fables for All titles at $12 each all score 7.1 and earned a Worth it verdict.

Those five children's stories are not volumes of one book, but they are a family sold at one price. Our review of The Last Bottle notes a modest price and a 60-day refund window. Three Understanding Hypertension titles are also priced at $37 each, yet their scores range from 5.8 to 6.3, so a shared price does not guarantee a shared score.

For the publisher side of this pattern, read template publishers: many titles, one price. For bundles priced as one purchase, see bundles and mega packs. The series sit in the politics and economics category and the education and languages category.

What should you do before buying a second volume?

Buy one volume first, use the refund window if it disappoints, and only then decide on the rest of the set.

Checklist

  1. Multiply the single price by the number of volumes to see the real total.
  2. Note the currency and any tax line on each order form.
  3. Check who sells it; the same account selling several author names is worth noticing.
  4. Buy one volume and read it fully inside the 60-day window before buying more.
  5. Keep each order confirmation, because every volume is a separate purchase.
  6. Do not rely on a high Volume I score to judge the content of later volumes.

Series are built to make the second purchase easy, because every volume has the same price and layout. Our scoring method is on the methodology page.

Frequently asked questions

Do ebook series on Digistore24 charge the same price for every volume?

In the series we reviewed, yes: EUR 12.99 per volume for the three geopolitics series and $27 per title for Sing and Solve Accounting, as of October 2026.

How much does the full Sing and Solve Accounting series cost?

The 12 titles cost $324 before tax at $27 each. With the totals our reviews show, 11 at $29.23 and one at $27, the sum is $348.53.

Is there a discount for buying the whole set?

We found no bundle discount in our reviews. Each volume has its own order form and its own price.

Which geopolitics ebook series scores highest?

Architecture of American Power and Rise of the Multipolar World both reach 7.0 on most volumes, while New Architecture of Global Power scores 6.9. All 17 volumes are Worth a look.

Can I get a refund on one volume of a series?

The order forms we reviewed show a 60-day refund window for each geopolitics and Sing and Solve purchase, handled per volume because each is a separate order.

More from our sister sites

Related reading on other independent sites we publish. Each one has its own editors and its own catalog.

Worthorpass publishes offer reviews, not hands-on product tests. We may earn a commission when you buy through links on our review pages; it never changes a score. Nothing here is financial, medical or legal advice.

Keep reading

More buyer guides

All guides