Web pricing

I am sure this has been asked loads of times but I don’t really care.

I want to set some prices for web sites I do but don’t no what is a good price.

I was thinking;

1 page site design

HTML: £100
HTML+PHP: £130
Flash: £250

Each additional page

HTML: £40
HTML+PHP: £60
Flash: £120

Flash intro

£200

Does that sound far or a bit over priced? :-\