Sorry, I'm not familiar with any flying schools in your area so can't recommend any.
With regard to cost, it really depends on your ability and the frequency of your lessons; you're likely to need more than the minimum 45 hours (and therefore more money) if you only fly once a month, say.
I'd reinforce what's already been said; go and chat to any potential schools & instructors, take a trial lesson and then decide which one you feel comfortable with. Hang around the airfield, offer to make the tea, polish some tyres and get to know the pilots, and I daresay you'll be rewarded with a few back seat trips.
And don't pay anything up-front, even if they offer you a discount!
Good luck