Our Merlin Cards finish this week so I am making the most of them why we can. As I never tire of the view from the London Eye that is where I headed with my daughter Katrina yesterday. Merlin cards can be an economical way of seeing the sights if you go to London regularly. It costs £17.50 to go on the London Eye for one person. The Aquarium and Eye costs £35. A Merlin Card when on offer can cost £85 and can be used all year. Use as often as you like and also you get into Theme Parks, Legoland etc. I am not sponsored by Merlin I just find having a card economical.