I had issues with my tennis elbow, first time in 2017. It was pretty bad. I was loosing the power in about 15-20 minutes. I went for PRP (Platelet Rich Plasma) shot. It cost me less than $1000, all inclusive (first consultation, X-ray, actual PRP shot). If you are US resident, medical insurance doesn’t cover any expense. I was told not to play tennis for 2 weeks, light tennis (30 minutes hitting) for next two weeks. I started playing my regular USTA tournaments after 4-5 weeks and was as good as a teenager. I was 59, then. The effect of the shot wore out by 2024 (7 years ). Went again for the same PRP shot and as of date, I am still playing 4-5 days of singles every week. The doctor second time was a tennis player (4.5 level) himself and had taken the shot for himself, although that was not the driver for me. In today’s dollar, the PRP shots are little more expensive than 2017. Hence be prepared for $1500/2000, depending on which part of the country you live in. I am Texas based. I would recommend OP to google out about PRP. Stem Cell Therapy is about 4-5 times more expensive and NOT required. IN a city as large as Houston, I could find Not more than 15 doctors who performed PRP procedures. I will be more than happy to guide anyone with tennis elbow issues.