Stuttering therapy can be really great if you find someone who specializes in stuttering. Most speech therapists don't, and a good number of them will say they work with stuttering. That's not the same as working with someone who specializes in it. It's also important to know what realistic expectations are for the outcome with stuttering therapy. Fluent speech may not be a realistic outcome. However stuttering with less tension and struggle is. Less fear and anxiety and more confidence, more participation in activities you enjoy are realistic expectations. It's definitely worth it if you can afford working with a specialist.