DeanC: You constantly change your prices. The previous prices were ok, but now you go too high. Why 10 btc for an EUR/USD card? I would pay max 5 btc each.
Onthe bottom one, make the blue color clear, the text black, the "o" orange and the earth grey. I think you should also make the ridges on the earth coin thing more straight and it would look cooler!
And I would complete the circle (earth) underneath.