Hi Tramsblondes (great name),
This would be called the "promise the agent hopes they never have to live up to" program, taught in the school of "I wanna be an agent and offer anything I can just to get people to list their homes with me" school. There are so many holes in the terms and conditions that the paper it's written on isn't even good to use as screening material. Can I be more blunt than this?
My recommendation to customers is to use an agent who has a reputation of knowing how to sell homes such that they don't have to offer a guarantee that really isn't one? Sad to think this kind of thing goes on, but it does.
P.S. If you want me to blow holes in the contract, send me a copy, it should be fun!