# Kniha.cz: Total Turnover Got an Increase of 35%
> Kniha.cz is a leading Czech e-commerce bookstore offering a vast selection of books, making online book shopping simple and convenient.
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E-Commerce
## Kniha.cz: Total Turnover Got an Increase of 35%
Kniha.cz is a huge e-commerce platform selling books in Czech Republic.
- Based Central and Eastern Europe
- Platform Google Web Toolkit
- Segment Books & Games
- Products
- Recommender
- +35% · Revenue boost
- +23.6% · Click-through rate
- +16.7% · Sold items
The Kniha.cz e-shop, owned by the Mladá fronta publisher, wanted to make shopping easier for its customers, so they decided to personalize the website.
First, we tested Luigi’s Box in an A/B test, where 50% of users saw the personalized variant and 50% did not. **Total turnover got an increase of 35% during one month of A/B testing.** This happened mainly due to the higher number of books purchased per transaction.
#### Where was the problem?
On the websites, there were places for cross-selling and upselling, containing a default offer of books that was the same for every visitor.
#### How did it end up?
Thanks to personalized recommendations, people often buy multiple books from the same author in one purchase, whether it’s a sequel book or just an impression of a favorite author’s name.
### Homepage solution
#### Luigi’s Box ON
We added a line of products and called it news in our offer. The personalized list of books corresponds to the customer’s preferences as well as current trends.
### Categories
#### Luigi’s Box ON
We added a special line to each category, displayed first and carrying book recommendations based on the category, customer interests, and current demand or trends. Luigi’s Box increases conversions by recommending books and making the whole purchase process easier for customers.
### Book details
#### Luigi’s Box ON
We added books from the same category that match the customers’ interests and which have the potential to get their attention as the first line on the product’s details page. In the second row, we placed books from other categories related to the currently viewed title.
### Shopping cart
#### Luigi’s Box ON
We also added displaying books that can get customers’ attention in the shopping cart.
How our clients benefit from Luigi's Box
- [Lucide: 8% B2B Conversion Rate Uplift](/case-study/lucide/) · Lucide chose Luigi’s Box and achieved an 8% B2B conversion rate uplift and other improvements. Find out more in our case study.
- [Barron: 18% Product Listing Conversion Rate](/case-study/barron/) · Barron is a custom merchandise seller that chose Luigi’s Box and received a Product Listing conversion rate of almost 18% and other important improvements.
- [Pancernik: 175% Uplift in Search Usage](/case-study/pancernik/) · Switching to a new search paid off and brought a 175% increase in search usage, and positive results for search conversions, clicks, and other important areas.
- [GAP Achieved a 28% Recommender Conversion Rate](/case-study/gap/) · GAP chose Luigi’s Box and improved their website with new search functionality that brings results across multiple domains.
- [Chicco Chose Luigi’s Box Search and Improved the Shopping Experience](/case-study/chicco/) · Chicco's switch to Luigi's Box brought them numerous improvements, including Autocomplete CTR and Search usage increases.
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