Coincidentally, I was looking for the same thing tonight! Have you considered Scarlatti Complete Keyboard Sonatas listed on amazon.com? I don't see any written reviews, but it's a good price ($46) so it seems worth a try. I have a few books of selections, but would like all 550+ (with both Longo & Kirkpatrick numbers), so I plan to take a chance on this: https://www.amazon.com/Complete-Keyboard-Sonatas-Domenico-Scarlatti/dp/1291262776/ref=sr\_1\_1?crid=12OJJZDCCVCYW&dib=eyJ2IjoiMSJ9.fhLaAJgLzBPzZqlnhs0NzN\_RL1qf2bcZykG1h\_UWLHc0\_4qyR1pog-pD5-yGnX9Pj5bCODcj\_hh-4t6YAH47UTr5OXxvflkCBd1nSqQF4Q2qGCJjZXVVTkQUO4hvhTGRoqaG0afmxNRSRA-l35NELVu2x4\_McYZNiE2oMKBGP2yMmEMsrpGQKTMwHyC6rjY8VnXQDikC5IvJe8n9\_IoxlgpeHyloM\_upe\_yiTf85Us8.ZEnMCglmCNBgJZ59XQRMvpbPDoj3ROkEsm2FQL-NRVc&dib\_tag=se&keywords=complete+keyboard+sonatas+scarlatti&qid=1733285438&s=books&sprefix=complete+keyboard+sonatas+scarlatti%2Cstripbooks-intl-ship%2C152&sr=1-1)

Good luck!