Increased sales and user engagement on the
Palmknihy.cz e-shop

About the project

Palmknihy.cz is a Czech online bookstore with a 25-year tradition that sells books, e-books, and audiobooks and is the market leader in e-books. It offers more than 160,000 titles across all genres. It is part of the Albatros Media group.

Main challenges

Palmknihy.cz used an external competitive solution for product recommendations. The recommendations were not personalized and only took into account the best-selling products, but did not reflect the individual needs of customers or the breadth of the product catalog.

At the same time, Palmknihy did not have adequate reporting available and therefore did not have an overview of the performance of specific recommendation areas. Cooperation at the customer support level was also lacking.

The goal was therefore to use AB testing to compare the website variant with the existing solution and with recommendation areas from Perselio.

Solution

Perselio Recommendations was deployed on a total of six recommendation areas. Thanks to Perselios's comprehensive coverage of the integration process from A to Z, Palmknihy was able to expand personalization with three completely new recommendation areas that had not been used before.

Results?

During a three-month AB test, the benefits of more sophisticated personalization using Perselio were clearly demonstrated, resulting in hundreds of percent increases in revenue from recommendation areas.

We also measured global revenue from both variants, with the Perselio website variant showing a 2% higher total revenue from the website over the long term.

Another interesting finding is the difference in the number of products offered on individual spaces. While the competing solution, based on simply promoting the best-selling products, offered a total of 378 unique items to all customers during the test, Perselio offered a total of 15,732 unique items by reflecting the individual preferences of each user.

Thanks to the clear benefits of Perselio Recommendations in all respects, Palmknihy.cz decided to end testing a month early and replace 100% of the traffic of the original outdated system with a solution from Perselio. Palmknihy customers will now receive a fully personalized experience based on real data about their behavior on the website.