Exellent thank youMy opinion top to bottom
$500
$175
$150
$200
If the barrels are in good shape
there retail prices , not what dealers will pay at a gun show. you will be doing good to get $500. for the lot. from a dealer.
If the Ross has the original 30.5 inch barrel and a really nice bore, maybe as much as $400. You didn't show the marks over the chamber, but if there is no hammered in WWII UK serial number or "E" or "N" or "LC" then you have the early tight dimension chamber which means much longer case life if reloading. Otherwise as above.
I doubt the Ross would bring $400.00 even if the bbl is the full 30.5". The charger guides have been removed and the correct rear sight is missing. I would think $300.00 tops.