I paid over £80 for the same tyre with the same situation but i live in london where prices are always upped. The Conti Premium Contact isnt a budget tyre, its just not that good.
The thing about mytyres.net is that you have to find someone to fit them after youve bought them, how are garages going to feel for you to pay them to fit tyres which arent theres, surely theyll bump up the fitting charge a lot?