Maybe it's just semantics, but the difference is whether or not you personally can save money. When a manufacturer establishes a 0 interest promotion, there is still only one pricing structure and you can't go back to the manufacturer and get a lower price by paying cash.
When I bought my 2320 I had the money in the money market account to pay cash. However, by financing it at 0%, I keep that money invested (admittedly at a low interest rate today) while I'm paying it off. At the end of three years, when the tractor is paid off, I will have as much as $1000 more in the money market account than I would have had if I had paid cash. John Deere has a little less money than they would otherwise, but that's not my concern. Effectively, they reduced the price for me below what they would have charged a cash buyer.
I guess I dislike the idea of going into debt for things, especially for non-essential things.
Yes, manufacturers can set terms and insist that their dealers/distributors stick to those terms.
I have the freedom to avoid those terms/conditions by not needing dealer/distributor/factory financing.
For me it isn't a question of shopping for 2% vs 1% or 0% ON PAPER with the rest hidden in an inflated price.
If it means buying brand Y instead it is their loss not mine.
Anyway, that has been my experience - and I will state again that I dislike going into debt for anything less essential than housing.
That is paid off too - I failed to refinance it to invest my equity in the various market crashes, silly me (-:
So "debt free" has it's value too (-:
I didn't get to this position overnight, I have had payment books - ~no more~
My credit rating probably sucks anyway, I pay of credit cards fully every month and without loan history I probably couldn't get a loan anyway, so maybe there is a downside (-: