Stay well clear and save your money.
As Tim says you can buy the same products they will supply you at a fraction of their costs.
All they can provide you with that has been proven to stop and maybe promote new hair growth is propecia or one of the other drugs that contain finasteride and rogaine/minoxidil.
They may have a fancy name for it and might of added their own secret natural ingredient to it (ie crushed nettles,saw palmetto) but at the end of the day its the two main things propecia and minoxidil they are using.
As for the laser treatment most people will tell you its rubbish.I dont know how much they charge per session of laser treatment but if you wanted to give it a go you can buy your own laser for £100 or so.Some people have posted they have seen the hair shafts strengthening while using lasers but in my opinion i would have to say they are a total waste of money.
If you do get a consult from them,dont sign anything as they will try and get you to committ to their expensive treatment.You can then post on here what they wanted to charge you and i and others can have a laugh at them.