Common in the era to get the showroom humming again to order up some cars with the 'white hat' treatment and buy a lot of newspaper space with a (nearly) unbelievable price.
While it would be **illegal** to conspire on a price, advertising MSRP with the factory 'savings' was perfectly legal.
"Y'know, Scott, all of the allotment the factory sent to us are spoken for, but, I can work with you on another car if you're ready to buy it this week..."