Most I've paid is £50 in Toni&Guy and Hob Salons - Wash, Cut, Blowdry
and cheapest was probably £23-25 at a small hair dressers near my house - but last May I didn't have the more experienced hair dresser cutting my hair and ended up with someone who had been cutting hair for 3months and made me look like pikachu, not a great look.
So think I'll pay that little bit more in the future!