Talk:RR3 Wiki:List of Sales so Far/@comment-61.12.69.166-20160914081757/@comment-28548945-20160914090441

I'm pretty sure it is offered to everyone, but you won't be notified of a sale if the car is still locked for you (on the "notification" thing on the upper left of the UI).

the series the car is in doesn't affect this - some cars are simply unlocked for some reason, some cars you need to reach a showcase event to unlock it - one showcase even should unlock it, you don't need all of them.