Garmin 540/840 at Adorama
Not convinced this is legit, but the Adorama site has links to the Garmin Edge 540 and 840 head units up. The images are all the same, but they list specs and pricing:
540
https://www.adorama.com/gp0100269400.html
540 Solar
https://www.adorama.com/gp0100269420.html
840
https://www.adorama.com/gp0100269500.html
840 Solar
https://www.adorama.com/gp0100269520.html