Value decrease from paint chips?

I have a 2020 A5 I am looking to trade in / sell. The car is in really good condition except for a few paint chips that are smaller than 1/2 a cm on the right door (5 total). CarMax had originally offered me 23k on this with some of these cited but when I was quoting a new car at the dealership the manager told me she wouldn’t budge on 20k based on them. Would anyone be able to give me an idea of if I’m being naive here and these really do knock $3000 off the trade value?

Update: Listened to everyone and took it to CarMax who gave me the full $23k no questions asked. Thank you for all your help – I’m beyond thrilled!