How much is your vet charging for prescriptions?

One of our readers has just told us that her vet has just started charging her a whopping £10 plus VAT for writing out prescriptions for her rescued Great Dane which has heart problems.
We'd be interested to hear how much your vet is intending to charge you?
For the last three years vets have been able to give clients prescriptions to get their drugs elsewhere they have not been allowed to charge for this service. But since the beginning of the month vets can now charge an admin or "medical determination fee" for writing out a prescription.
Our reader phoned the office of fair trading who told her to shop around and she phoned all the vets in her area to see what their admin fees were. Her vet was the highest, there were a few at £6 plus VAT and one very near that is only £2.50 including VAT. She said it would
be interesting to see and compare what people are paying around the country. She is in South Devon.
Many people are still not aware that they don't have to buy their medication from their vet surgery and can buy online at half the price.
So how does your vet rate? What are they charging?
Can you post where you live (by county) and the cost and whether it includes VAT.