I also just had it done today by a Tesla mobile service on my 05/2018 Model 3 Long Range RWD (
@Xelloss99 stole my thunder!!!)
All of the same part numbers, all of the same detail.
As I also have a 2023 MYLR that appears to satisfy the compatibility check, I couldn't check out with the $350 Model 3/Y retrofit option, only the $250 Adapter-only option at
https://shop.tesla.com/product/ccs-combo-1-adapter?web=true
View attachment 1027237
Maybe if you don't have another vehicle compatible with the adapter only, it will let you check out with the $350 retrofit...?
However, as mentioned by
@Apprunner, I was able to go into the Tesla app->Service->Request Service->Upgrades & Accessories->CCS Adapter Retrofit
Likely because I didn't buy through shop.tesla.com, my original service estimate had the $350 retrofit as expected plus $153 for labor, but when I questioned the labor since the retrofit states "IF A RETROFIT IS REQUIRED, THE SERVICE VISIT
WILL INCLUDE INSTALLATION AT YOUR PREFERRED TESLA SERVICE CENTER AND ONE CCS COMBO 1 ADAPTER.", the labor was removed.
So, $350+tax, and includes a CCS 1 Combo Adapter.