I hate to break it to you … but the prices you are asking for these are not realistic. Ebay has these parts in used condition (like yours) going for $75 Rear Der, $25 Front Der and $75 for the brakes. Current model Dura Ace (7900) does bring higher prices, but these are one rev old.
True ^. Just paid for all above new ebay $250…
THANKS so much to both of you for letting me know this! I’ll lower the price to $199 and will also include 4 brake pads (in good condition) to go with the brakes!