Hi,
I went to the Alternative Centre over the course of about 18 months and it is very expensive and didn't make much difference.
The treatment involoves a consultation every month or so at £50 during which you are tested with some machine and then you are told you need to take a mix of tinctures at £15 each (you need at least 13 = £195) and you are also told what you can and can't eat (basically avoid red meat, alcohol, peppers, tomatoes, chillies, etc and eat lots of veg, nuts, vitamins). You will of course also need to buy some other products from them which are in fact just olive oil with some dead sea salts disolved in them and cost around £15 a pop.
In my humble opinion you would be better off buying the book called healing psoriasis (I think) by Sandra Gibbons and following the diet and it would only cost you about £6. The diet is a cut down version of the Pagano diet
Good luck