Q. Your page on Invisalign says that most orthodontists give a free consultation. In Cardiff none are prepared to do this, the cheapest consultation being £85 and including x rays and mouth casts, which I don’t want at this stage. I want an indication of options, prices and length of time. If I were buying anything else I would get a few quotes, yet for treatment costing thousands I am expected to commit nearly £100 with no information.