I agree that this is not a good idea. I am certainly confident enough that if I offered a money-back guarantee that nobody would take me up on it for any honest reasons. If anyone did take me up on it, it would be the type that just wants their money back. I don't want to open myself up for that. I always ask people about their experience once they are done and ask if they liked it, etc. I have never had anyone appear to be dissatisifed. If anyone ever expressed that they were completely dissatisfied, I would not charge them.
I am certainly not trying to say that I'm the best therapist in the county and that everyone who has ever been on my table has found me to be the best massage therapist they've ever had. However, I do believe that everyone has left having a very good and positive experience. If they did not, then I believe it was their fault, as I always try to make them feel comfortable and invite them to give me feedback at any time during the massage, and I also check with them periodically to see that all is going well. If they have not said anything and then complain at the end, there's not much I can do.
I give them my time, my skills and the best that I can offer them. I always feel that they are getting a good, quality massage and have never had anyone say anything to the contrary. As I said, if anyone did express great displeasure, I would not charge.
I can't recall many restaurants having a policy listed on their menu that says "Money-back guarantee", however, there have been a few times that I have had an awful meal and have not had to pay. That being said, there have been other times when whatever I ordered was just not quite my cup of tea. Perhaps it was too spicy of a recipe for me or maybe I found that I really don't like buffalo. That does not mean that the restaurant did not do its best and serve me a fine meal. It just wasn't a good match for me. I still expect that I should pay for my meal. As well, your clients should pay for their massages.
I don't think that advertising something like "IF you don't LOVE your massage, then you don't have to pay" is going to drive any more clients in the door. And, it may open you up to some unscrupulous types who will take advaneforum.xxxe. In my opinion, it's not worth the risk. Do a good job by providing them with a clean room with a nice atmosphere, keep it a comfortable temperature or get blankets, etc. to adjust for some clients, keep things quiet, dress professionally, be sure your breath is fresh, your nails appropriately manicured, your equipment in good condition, be on time, listen to their requests for more pressure, or specific areas to pay attention to, keep your skills updated and if you do all these types of things, most clients will have a good enough experience that they will be willing to pay you for your time, even if your skills have not measured up to their expectations.