Privacy & affiliate disclosure

Last updated 19 July 2026

Affiliate disclosure

Crownly participates in the eBay Partner Network. When you click through to a listing and buy, we may earn a commission from the marketplace — at no additional cost to you. The price you pay is the same either way.

This never changes what we show you. Listings are ranked by price and relevance, never by what pays us. We do not accept payment to feature, promote, or reorder a listing, a seller, or a reference.

What we collect

If you sign in, we store your email address. We use passwordless magic-link sign-in, so we never receive, store, or have any way to see a password.

If you save references, create a wishlist, or set a price alert, we store those items so we can show them back to you and notify you when a matching listing appears.

We do not sell personal data, and we do not share it with advertisers.

Marketplace listing data

Listings shown on reference pages are retrieved from marketplace APIs, principally the eBay Browse API. This data belongs to the marketplace and its sellers, and includes the public seller username attached to a listing. When eBay notifies us that a user has closed their account, we remove that seller's username from our records.

Processors we use

• Supabase — database and authentication (hosted in the EU).
• Netlify — website hosting and delivery.
• Brevo — transactional email, used to send sign-in links and the alerts you asked for.
• eBay — listing data, via the official Browse API.

Your rights

You can ask us for a copy of your data, ask us to correct it, or ask us to delete your account and everything attached to it. Write to privacy@crownly.watch and we will action it. If you are in the EU or UK, you also have the right to lodge a complaint with your data protection authority.

Changes

If we change how we handle your data, we will update this page and move the date at the top.