Don't let anyone sell you anything you are unsure of, you are lucky that you live in the age of the internet and that everything can be researched, in my opinion laser is a load of crap, and in the long time I have been researching bloody hair, I've seen nothing to prove to me that it's any good. The only proven treatments are Propecia/finasteride/Proscar and Regaine/Rogaine/Minoxidil and obviously hair transplants, but you should think long and hard before going down the ht route.