When I purchased my old theatre, it came with very old everything, including an old soda machine. The previous owner told me Coke products were cheaper than Pepsi. I called Pepsi and their product was considerably more expensive.
When I remodeled though, about a year later, I wanted to get a new machine with more heads. Coke said they would give me a tower to set on top of my current machine, but it would be awhile and I would have to install and service it. I then called the local Pepsi bottling company and asked what they would do for me. I told them about the tower offer and the product cost difference. They offered me a brand new eight head machine (no cost to me), which they would install and service for free, and national pricing of their product (about 20% less than my Coke prices at the time). I gladly accepted a five-year exclusive contract with them.
They didn't mention cups when this negotiation took place. When all was said, done, and installed, they asked how many cups I wanted to order and I said none. They said it was part of the agreement. I said it wasn't even discussed. When it came time to sign the contract that clause was crossed out. They haven't mentioned cups since. I am very happy with their deal and their service.
Oh yeah, when the nice Pepsi guy came to install the machine, he saw all my old Coca-Cola promotional stuff (clock, raggedy old menu boards & banners). He called his boss right then and told him to order me all that stuff--all new, all FREE. Anytime I need a new banner for some promotion, all I have to do is call and I get it in about 7-10 days. NO CHARGE.
Before the deal was made I did call Coke back and try to get the same deal--I really like the taste of Coke better--but they said they couldn't match Pepsi's offer for either the product price or the machine.