I recently lost a sale, had the guy approved for a brand new CK25HST, loader, Kioti bush hog, etc. Over the phone I asked him if he wanted to use the fincance company's insurance or add it to his property insurance...
He got upset with me because his payment came in higher than I had originally told him because we added the property insurance. He said I should have been more honest with him up front about the insurance, and he was right.
I would have never guessed that someone with good enough credit to get approved would not be experienced enough to realize that something financed will have to be insured...
Now I talk about the insurance up front. It was my error and we both paid a price, I lost the sale and he bought less tractor from my competitor who he thinks is "more honest".
I think the truth is that we just went over his monthly budget.
I was certainly not trying to be deceptive, in fact I always pad the payment I quote by a few dollars to cover the finance company's document and filing fees which are always added in.
In most places you have a choice of were you get your tractor insured, but the lender does need it covered.
Of course the rebate is only offered to those who do not use the special financing, you can pay market (almost 8% now) and keep the rebate...
IF you were asked to pay this amount in cash, it could be because the down payment was not large enough. I have had this happen before, especially on deals with sales tax, as the down payment needs to cover the tax first, then the rest is applied to the equity. (They don't finance the sales tax).
Bottom line, is I don't think your dealer was trying to gouge a few dollars more, but perhaps, like my situation, he could have explained better...
Hope this helps, you are not paying $600 for financing. actually only the documentation and filing fees are a cost of financing and they would even be added to an 8% deal...