One thing that will tell you if they had the factory service done or not or if they are cheap, is the cabin filter! On the Acura’s, 2nd generation to be more specific, you have to physically cut the plastic tab in front of the cabin filter to change it for the first time. If that is not cut, never been done and thus the service not performed or they cheaped out. I hate cutting corners, so to do so only makes me wonder what other corners where cut….