False. The prices will collectively go up for people with bad credit. Some dealers will give a cash discount, but the ROI on investing the money and making payments is usually much better return. Lenders don't give a darn about individual deals. They make money on the aggregate of deals in a traunch.
Trade-ins are a level of negotiation for dealers. They have to be right more than they are wrong. Sometimes you get a deal when you take it all in. In short, absolutes are rarely correct.
Some auto lenders will give a better rate when you trade-in your vehicle. The data shows that people who trade are less likely to default. The idea being that most people need a functional car to work. The same is not true for many tractor purchases, though.
What part of Bill's contribution are you saying is false?
Prices went up because of market share more than anything else.
What a buyer is shown for trade in, has more to do with market value and for a clean piece, value is higher.
Also, the word "shown" is most certainly a variable of price paid dependent on the margin the dealer wishes to acquire.
If the dealer has a propensity for getting "list" for their tractors, then they can "show" the buyer more for their trade.
The important figure is "what's coming out of my pocket" whether it's 4, 2.5 or "0" %.
If one is bent on thinking a buyer is putting something on the dealer by hiding their trade till the very end, they are sadly mistaken.
The dealer always has room for "adjustments" because they know all the in's and out's of the buying public.
The divisions of money lent and paid in series (traunch) by a bank or financial institution or corporate entity, has less to do with the dealer than the money lenders.
The dealer is going by corporate incentives (if any) and his own buy/sell margins necessary to stay competitively in business.
There is seldom a "free lunch" for everyone concerned and as you have stated, there are no absolutes.