I got a chuckle out of an email correspondence with the salesguy I'm working with at Infiniti. He shot me a payment on a properly spec'ed car. I asked what the residual and money factor was and what the MSRP and cap cost was. He asked me why I wanted all those numbers so I told him so I could work the lease and see how the actual numbers fall out. He told me leasing formulas are pretty complicated, and if I came by the dealership, he could print up the lease contract which would show all that. I told him Infiniti must have a different contract from everyone else as I've never seen a lease contract that goes through the formula. It just kicks out a few total costs, like the total cost to finance, and does not go through the formula. I said to just shoot me the numbers. He said he could not explain the leasing formula in email as it's very complicated. I told him I was not asking him to explain it just provide the numbers and that I found nothing complicated about:
(cap cost - residual) / 36
(cap cost + residual) x money factor
He had the balls to say this formula was incorrect but would not correct it. I told him to print my email and go talk with the leasing manager. That was Wednesday. Yesterday he emailed me to say it had been "a long time" since he'd done a lease by hand and that I was indeed correct.
If the choice is the FX he's in a world of hurt when I start to really negotiate.