I tried PRP after my hair transplant and I did see some improvement in my hair growth. I had about 3 sessions done, each costing around $500-$800, and I started to notice results after a few months. However, I will say that the results were not as drastic as I had hoped for, and the maintenance costs can add up over time.
Overall, I think PRP can be a good option for some people, especially if you're looking for a non-invasive way to potentially improve your hair growth. Just make sure to have realistic expectations and be prepared for ongoing costs if you decide to continue with the treatments.