The UK HFEA have voiced their concerns regarding the efficacy of some of the add-ons offered by clinics and their impact on ivf cost in UK. These add-ons which include including tests, drugs, equipment, holistic or alternative therapies, and surgical interventions can significantly increase the cost of treatment and therefore the HFEA recommends that you carefully consider whether such treatments are necessary. To help you decide on whether such add-ons are appropriate they have devised a traffic light system to indicate whether the evidence, in the form of high-quality randomised control trials (RCTs), shows that a treatment add-on can safely improve the live birth rate for someone undergoing fertility treatment - https://www.hfea.gov.uk/treatments/treatment-add-ons/ .