Privacy and analytics cookies

María Leal is responsible for this website. For privacy questions or to exercise your data protection rights, contact hello.productshelf@gmail.com.

If you accept analytics, we load Google Tag Manager and Google Analytics 4 to measure page visits, language, book views and clicks to Amazon and Gumroad. Google processes technical information such as browser and device information and interactions with the website. We use these statistics to improve our content. We do not use this implementation to enable advertising storage or personalised advertising.

Analytics is optional and based on your consent. Until you accept, our analytics integration does not load Google tags. Rejecting does not affect access to the website. You can change your choice through “Cookie preferences” at the bottom of any page. Withdrawing consent stops future analytics on this browser; it does not automatically delete data already processed.

We store your analytics choice in this browser for 180 days using local storage (tps.analytics-consent.v1). After acceptance, Google Analytics may set cookies such as _ga and _ga_* to distinguish visits and sessions; their expiry depends on the Google Analytics configuration and may be up to two years. Clearing browser storage removes your saved choice.

Google Ireland Limited provides the analytics service for users in the European Economic Area. Processing may involve international transfers. See Google’s Privacy Policy and Google’s cookie information for details. You may also contact your data protection authority, including the Spanish Data Protection Agency.

Purchases take place on Amazon or Gumroad, which apply their own privacy and cookie policies. A click from this website does not let us confirm a purchase.

Choosing your Amazon store

To link to the Amazon store for your country while keeping the same book edition, your browser makes a request to Country (api.country.is). The service receives the public IP address used for that connection and returns an estimated country. We do not request GPS access or store the IP address.

We keep only the country code in session storage (tps.amazon-country.v1) for up to one hour in that browser tab, so each page does not need a new lookup. Failed lookups are remembered for five minutes. This store selection is separate from optional Google Analytics. If the lookup fails or the paperback has no listed store for your country, English editions use Amazon.com and Spanish editions use Amazon.es.

Displayed prices remain reference prices for the store named on the product page. Check the final price and availability on the Amazon store you visit.