buono compares book prices across Europe's bookshops. Readers scan a barcode or search a title and see every shop's price side by side — then buy from whichever they choose. Your shop can be one of them.
Paste the key from your approval email and choose your stock file. Each upload replaces your listing, so send the whole inventory — every book not in the file is removed. Uploads older than 7 days show "check availability" instead of "in stock", so send a fresh file weekly (or give us a feed URL and forget about it).
Shopify — Products → Export → "All products" as CSV. We read the barcode (ISBN), price, inventory and handle; draft products are skipped.
Google Shopping feed — the file your Google Merchant / feed plugin produces (gtin, price, availability, link, …). Works as an upload or as a URL for nightly pulls.
Any spreadsheet saved as CSV with these headers — only ISBN, price and URL are required:
isbn,price,currency,condition,stock,url,title,author 9780141036144,9.99,GBP,new,3,https://cornerbooks.co.uk/products/1984,Nineteen Eighty-Four,George Orwell 9780241972939,3.50,GBP,used,1,https://cornerbooks.co.uk/products/animal-farm,Animal Farm,George Orwell
Prefer to automate? POST https://getbuono.com/partner/v1/offers with Authorization: Bearer <key> and the CSV as the body (or JSON {"rows":[…]} with the same column names). GET /partner/v1/me returns your listing status.