If it is a car or truck and it don't have a price i most of the time don't even read the ad.
As far as parts I cant post the price's of some of my parts because it is against the MFG rules to advertise cheaper than there MFG suggested price .
And there are some deals on parts like that i may loose some customers by not putting the price there but for the one's that do call they get a deal not all companies have MAP pricing but most do especially the larger one's.