Fair Price for OEM Tail Lights and Mirrors - Considering BSM Kit

[CERA2254]

My apologies if this is in the wrong section, but I’m thinking about getting the Blind Spot kit from Infotainment, I have a 2019 rebel. It is pricey, so I’d certainly have to sell my current mirrors and tail lights to help offset the cost. What’s a fair price to ask for 5th gen LED tail lights and power glass tow mirrors (manual folding)?