I have 2 brand new (unused) SRAM Red eTap rear derailleurs as well as one used one. The new ones come with brand new batteries and the used one comes with a perfectly functioning battery as well.
Retails new for $650.
Pricing:
New SRAM Red eTap Short Cage: $550 shipped with insurance.
Used SRAM Red eTap Short Cage: $450 shipped with insurance.
Photos:
Retails new for $650.
Pricing:
New SRAM Red eTap Short Cage: $550 shipped with insurance.
Used SRAM Red eTap Short Cage: $450 shipped with insurance.
Photos: