Chill Mick. It was just a question. If you do it just for fun that's fine, I don't give a toss, I'm not asking you to justify yourself, all I wanted to know was if you were asking (like Bateman said he was) because you were worried you might be overcharging.
You asked how much, I said £10: you told me you get 10x that. Good for you, it doesn't effect me in the slightest.