I wouldnt say its people are dumb.....its just a sales tactic. Different wording to say the exact same thing.
IE: $20,000 tractor @ 4.99% interest (makes payments $377.33 over 60 months)
or
$22,640 tractor with 0% interest for 60 months. (also makes payments $377.33)
Sometimes they may also give you an option......like on said tractor above.....you can have $2640 cash back in lieu of 0% interest
Many different ways to say the exact same thing. Its all about what people like to hear. People like the illusion that they are getting something "free"....like interest. When actually, they are only paying 60 mos of interest up front instead of spaced over the life of the loan.
But the options are nice. Their 0% option or cash back options are usually based on an average interest rate. Lets say your credit is below average....and the best you can finance on your own through a bank is only 6.99%......then the 0% (where you pay 4.99% interest up front), is actually a better deal. If you have above average credit, and a good bank.....you pay be able to finance at 2.99%.....and actually pay less in the long run than their 0% interest.
My last tractor and two auto purchases.....werent financed. But prior to that.....I NEVER negotiated on sales price. I negotiate on what its actually gonna cost me. IE:...monthly payments for a given term. Sales price is irrelevant, thats only a portion of what one has to pay. Taxes, tags, title, document fees, interest, etc. And they all like to play with those numbers. I only care what my payment for a given term is gonna be, and negotiate basesd on that.
And even doing that, I have had some less than intelligent finance people who think I am an idiot. IE: when we were buying the wifes truck back about 10 years ago, my terms were simple.....$400/month and not a penny more....for 60 months. I told the finance guy its a simple yes or no.....can you do it or not. finance guy goes into the back room and comes back a few minutes later and says "great news, (as he shows me the paper with his figures) we can do it for $371.xx/month......for 72 months" I polite said that was not what I requested. 60 month term....no more. Well he flips his paper over and shows me a ~$425 payment for 60 months. I said thanks for your time, and the wife an I got up and left. Just as we were closing the doors to the car to go home, our salesman (good friend of mine) came out and wanted to know whats up. I told him that his finance guy must either think I am and idiot, or he is an idiot. As I asked for a simple yes or no as to weather they can sell me that truck for $400/month for 60 months. And that he tried to push a 72 month term on me that I didnt ask for. So we left. My salesman friend said "can you wait just a second and let me see whats going on". I told him I would give him 5 minutes then we were pulling out. In about 3 minutes he was back out and said would you still be interested in $400/month or less for 60 months. I said only if you throw in running boards now because I dont appreciate being jerked around by the finance guy.
Deal was done and it cost the $350 of running boards that it wouldnt have cost them the first time around.
My point of all that.....if you are financing.....negotiate towards paymet and term. Because that is what you are "actually" paying out of your pocket. They can screw with all the other numbers as much as they want....I dont care. The only thing that matters to me is how much I make the check out for every month, and how many times I have to make that check out.