I had a conversation with a leasing guy one time about leasing some equipment we were looking to purchase. I said "What's the interest rate?" and he said "Well......leases don't work like that, it's not like that at all, we don't change an interest rate" and then he talked for 4 more minutes and said nothing. I took his numbers, ran them, and it came up to be something like 28% interest. He called back and I expressed how there was no way I'd ever pay 28% interest for a piece of equipment and he kept the same line "We don't charge interest". I said, "Call it what you want, at the end of the day, I'm paying you 28% interest for the deal. You might not call it that, but that's the reality of it out of my pocket".
Be really careful with a lease, you can end up paying a LOT more than you'd normally pay.